Open Pit Design 1

Introduction to the Open Pit Design Tutorial

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T e Open Open Pi Pitt Desi Design gn Tu Tuto tori ria a Introduction to the Studio 3 open pit design tutorial.

The Open Pit Design Tutorial This tutorial introduces you to the key Studio 3 features 3 features used for the creation of an open pit design which would typically form part of a feasibility study or a mine planning cycle. Designing an open pit is an iterative process involving consideration of many design criteria, constraints and objectives. There are multiple ways in which an open pit can be designed using the standard set of tools. The main objective of this tutorial is to introduce you to the Studio 3 open 3 open pit design tools, as well as some general design tools and how to use them with various open pit design methods.

This tutorial includes principles, procedures and exercises covering the following topics:: 

Importing and viewing of ultimate pit shell data



Creation of a pit base string



Creation of open pit design strings i.e. toe, ramp and crest strings; roads ad switchbacks using the following manual design methods: 

toe-ramp-crest



toe-ramp



contours



Use of the Quick Pit automated design tool



Clipping the pit design strings at the terrain surface



Creation of pit DTM surfaces



Merging pit and topography DTMs



Tonnage-grade evaluation of the pit design. Bench Naming Convention In this tutorial, the top elevation of a bench is used to name the bench. Other naming conventions can also be used when designing your pit e.g. bottom or mid bench elevations or a non-elevation related naming system.


Copyright Copyr ight © CAE Datamine Datamine Corporate Corporate Limited

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Copyright Copyr ight © CAE Datamine Datamine Corporate Corporate Limited

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The Open Pit Design Data Set

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T e Ope Open n Pit Pit Desi Design gn Da Data ta Set The open pit design data set.

The Open Pit Design Data Set The Viking Bounty open pit data set used in this tutorial represents the output from an NPV Scheduler open pit optimization process, the output ultimate pit limits and resultant open pit design. The mineral resource which formed the input into the optimization process is a shallow, hydrothermal Cu-Au deposit. The data set consists of the following: 

surface topography



ultimate pit block model and wireframe



example open pit designs for the following pit design methods: 

toe-ramp-crest



toe-ramp



toe contours



Quick Pit (automated design).

Some of this data can be seen in the image below, viewed from above the topography surface and from the south-west:

The pit optimization and design was generated using the following economic and mining parameters: Face Angle:

60 degrees

Rock Density:

2.5 t/m3

Road Width:

20 meters

Mining Cost:

0.95 $/t

Road Gradient:

1:10 (10%)

Processing Cost:

3.63 $/t

Berm Width:

8 meters

Gold Price:

11.25 $/g

Bench Height:

20 meters

Copper Price:

2094 $/t

Ultimate Pit Slope:

50 degrees

The Open Pit Design Data Set

Bench Naming Convention In this tutorial, the top elevation of a bench is used to name the bench. Other naming conventions can also be used when designing your pit e.g. bottom or mid bench elevations or a non-elevation related naming system.

Related Topics Tutorial Files List

Copyright © CAE Datamine Corporate Limited

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Tutorial Files List

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Tutoria Fi es List A list of files used in the open pit design tutorial exercises.

File Locations Assuming that a default installation has been performed, all sample files referenced by this tutorial can be found under: 

C:\Database\DMTutorials\Data\VBOP\Datamine



C:\Database\DMTutorials\Data\VBOP\Datamine\OPM

These folders contain native Datamine format files (*.dm). Please note that these folders contain many files and that only the files listed in the table below are relevant to this tutorial.

File Names and Descriptions The following table contains a list of the relevant files used in this tutorial. Each entry lists the existing Sample File Name, the suggested User File Name and a file Description. They are grouped according to the name of the folder in which the files are located. Sam ple File N am e

Us er F ile Na me

Des criptio n

...\VBOP\Datamine\OPM:

_vb_c_pit240.dm

c_pit240

Strings - contours method; toes, ramps and adjusted crests to 240m

_vb_c_pitcrest100.dm

c_pitcrest100

Strings - contours method; toes, ramps and crests to 100m

_vb_c_pitcrestadj-20.dm c_pitcrestadj-20

Strings - contours method; toes, ramps and adjusted crests to -20m

_vb_c_pitcrestadj100.dm -

Strings - contours method; toes, ramps and adjusted crests to 100m

_vb_c_pitrampds.dm

c_pitrampds

Strings - contours method; toe contours and ramp design string

_vb_c_pitrampout.dm

c_pitrampout

Strings - contours method; toe and ramp outline

_vb_c_pitramptoe-40.dm c_pitramptoe-40

Strings - contours method; ramp outline and adjusted -40m toe

_vb_c_pitramptoe80.dm -

Strings - contours method; ramp outline and adjusted 80m toe

_vb_c_toecons.dm

-

Strings - contours method; toe contours

_vb_pitmod1.dm

-

Block model - waste and grade model extending beyond the limits of the design pit (used for evaluation)

_vb_npvmod1.dm

-

Block model - ultimate pit output from NPV Scheduler

_vb_npvssurfpt.dm / _vb_npvssurftr.dm

-

Wireframes - ultimate pit output from NPV Scheduler

_vb_pitbase-40.dm

pitbase-40

Strings - the open pit design base perimeter at -40m elevation

_vb_q_pit.dm

-

Strings - quickpit method; toes, ramps and crests up to 260m elevation

_vb_q_pit20.dm

q_pit20

Strings - quickpit method; toes, ramps and crests up to 20m elevation

_vb_q_pit-20.dm

q_pit-20

Strings - quickpit method; ramp, crest and toe up to -20m elevation (lowest bench)

_vb_q_pit-20adj.dm

-

Strings - quickpit method; ramp, crest and adjusted toe up to -20m elevation (lowest bench)

_vb_q_pit80adj.dm

-

Strings - quickpit method; ramp, crest and adjusted toe up to 80m elevation (TAG, RDFLAG absent)

_vb_q_pit80adj2.dm

-

Strings - quickpit method; ramp, crest and adjusted toe up to 80m elevation (TAG, RDFLAG present)

_vb_q_pit100.dm

-

Strings - quickpit method; switchback

_vb_res_designpit1

res_designpit1

Results - evaluation results for the design pit and ultimate pit

_vb_tr_pit-20.dm

-

Strings - the toe-ramp open pit design for bench -20 (lowest bench)

_vb_tr_pit0.dm

tr_pit0

Strings - the toe-ramp open pit design for bench 0 (lowest two benches)

_vb_tr_pit0Crests.dm

tr_pit0Crests

Strings - the toe-ramp open pit design for bench 0 (lowest two benches)

_vb_tr_pit200.dm

-

Strings - the toe-ramp open pit design for bench 200

_vb_tr_pit220.dm

tr_pit220


Tutorial Files List

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_vb_tr_pit260.dm

-



-

Strings - the toe-ramp open pit design including crests up to bench 260 (top bench)

_vb_trc_pit

-

Strings - the toe-ramp-crest open pit design trimmed to topography

_vb_trc_pit0.dm

trc_pit0

Strings - the toe-ramp-crest open pit design up to top of bench 0

_vb_trc_pit-20.dm

trc_pit-20

Strings - the toe-ramp-crest open pit design for bench -20 (lowest bench)

_vb_trc_pit70.dm

-


_vb_trc_pit80.dm

trc_pit80


_vb_trc_pit110.dm

-


_vb_trc_pit140.dm

trc_140


_vb_trc_pit240.dm

-


_vb_trc_pit240pt.dm / _vb_trc_pit240tr.dm

trc_pit240pt / trc_pit240tr Wireframes - toe-ramp-crest pit, untrimmed to topography

_vb_trc_PitTopoInt.dm

trc_PitTopoInt

Strings - toe-ramp-crest open pit and topography wireframes intersection

_vb_trc_PitTopopt.dm / _vb_trc_PitTopotr.dm

trc_PitTopopt / trc_PitTopotr

Wireframes - merged pit and topography

_vb_npvmod1.dm

-

Block Model - ultimate pit

_vb_npvssurfpt.dm / _vb_npvssurftr.dm

-

Wireframes - ultimate pit shell surface

_vb_stopopt.dm / _vb_stopotr.dm

-

Wireframes - topography surface

...\VBOP\Datamine:

Related Topics

Tutorial Exercises List


About Pit Design

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Open Pit Design Elements of open pit design.

Terminology The following terms are commonly used in open pit design and are also used in this tutorial: 

Bench - a horizontal excavation slice within the open pit, generally having a height range of 5-20m. The top and bottom extents of a bench are defined by a pair of outlines i.e. the cre st and toe outlines. A full stack of benches makes up the full open pit.



Crest - the top limit (outer edge) of a bench, usually defined by a perimeter string.



Toe - the bottom limit of a bench, usually defined by a perimeter string.



Face - the vertical or inclined surface defined by the pair of crest and toe strings i.e. the side of a bench.



Face Angle - the angle, in degrees, measured from the horizontal, describing the angle of the face; also known as the batter angle.

These are summarized in the following vertical section diagram:

The tutorial exercises use the bottom-up design approach where the pit is designed from the bottom of the pit shell upwards towards the topography surface; a top-down approach would use the same tools and similar general techniques. The following open pit design methods are covered in this tutorial: Toe-Ramp-Crest Method The Toe-Ramp-Crest method involves designing the pit on a bench by bench basis usually starting from the lowest bench and working upwards. The toe string is created, the ramp is inserted and finally the crest strings are added. This method builds ramps that include access to the berms and it can be applied working either from the bottom up or the top down. Toe-Ramp Method The Toe-Ramp method involves creating all the toe and ramp strings first and then adding the crest strings. This method is quicker than the Toe-Ramp-Crest approach and yields a continuous ramp with no offsets. You must however, complete the pit design in the same session of Studio and the pit can only be designed from the bottom up. Contours Method

About Pit Design

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The Contours method involves inserting a ramp and crest strings into an existing set of toe contour strings. These toe strings are typically created by generating contours around an optimum pit shell block model. Automated Pit Design (QUICKPIT) The QUICKPIT process is designed to speed up open pit design, and access existing Studio tools in an efficient way. QUICKPIT enables an iterative design process whereby the design of a pit can be altered (ramp positions, gradients, berms etc.) to find the best results.


About Ultimate Pit Shells

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U timate Pit S e s About ultimate pit shell models. Overview

The location, extraction sequence and extents of an open pit design is typically determined by a scheduled ultimate pit model or shell. This is generally output from a program like NPV Scheduler which is used to determine the limits and optimal extraction sequence of a potential open pit using various economic, environmental, mining and mineral processing parameters. The 3D output fro m a scheduled ultimate pit typically includes the following data: NPVS Block Model

- Containing only block model cells lying within the extents of the ultimate pit with the fields: VALUE - the profit generated from mining each block PHASE - defines a series of pits based on successive reductions in profit values SEQUENCE - the recommended order in which blocks should be mined to maximize the Net Present Value of the pit.

NPVS Wireframe

- Defining the ultimate pit surface.

Model

This output is then used to guide the open pit design process.


Tutorial Exercise List

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Tutoria Exercises List A list of the exercises available in the open pit design tutorial.

List of Exercises The following table contains a list of the exercises covered in this tutorial, grouped according to the different headings.

Heading Getting Started

Page

Exercise

Creating a New Project

Creating and Saving a New Project

Displaying Design Toolbars

Displaying the Open Pit Design Toolbars Customising Toolbars Saving the Toolbar Settings to a Profile

Defining Mine Design Settings

Defining Project Settings Defining Mine Design Settings

Working with Pit Shells

Viewing Ultimate Pit Shell Models Creating a Custom Display Legend

Viewing Ultimate Pit Shell Models Creating a Custom Display Legend Applying a Legend Querying and Filtering Block Model Cells

Manual Design Methods

Creating a Pit Base String


- Toe-Ramp-Crest Method

Generating the First Bench


Creating a Full Toe-Ramp-Crest Bench Creating a Full Toe-Ramp-Crest Bench Designing a Switchback

Designing a Switchback

Designing at the Topography Surface Designing Through the Topography Surface - Toe-Ramp Method

Generating Toe-Ramp Benche Adding Crest Strings

- Contours Method

Creating a Toe-Ramp Bench Adding the Crest Strings to the Toe-Ramp Design

Designing at the Topography

Designing Through the Topography Surface

Creating Ramp Strings

Creating Ramp Strings Between Contours

Generating Ramp Outlines

Generating Ramp Outlines from Strings

Adjusting Toes to Ramps

Adjusting Toe Contours to Ramps

Adding Crests Below the Topography Adding Crests Below the Topography

Automated Pit Design

Adjusting Crests to Ramps

Adjusting Crests to Ramps

Adding Crests at the Topography

Adding Crests At the Topography

Creating a Single Bench

Creating a Single Bench

Creating Multiple Benches

Creating Multiple Benches



Wireframing and Manipulation Adding Attribute BENCH Interactively Adding and Setting a BENCH Attribute Interactively Generating a Pit DTM

Generating a DTM of the Pit Design

Generating a Pit-Topo Intersection

Generating a Pit-Topography Intersection String

Trimming the Design Strings


Merging the Pit and Topo DTMs

Merging the Pit and Topography DTMs

Tutorial Exercise List

Evaluation

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Evaluating the Pit Design Wireframe

Related Topics Tutorial Files List


Evaluating the Pit Design Wireframe and Grade Block Model


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Creating a New Project Creating a new Studio 3 project file for the open pit design tutorial.

Overview In this part of the tutorial you are going to the create a new project, add files and then save the new project.

Prerequisites 

Check that you have the Studio 3 tutorial data folders. These are located (with a standard installation) under C:\Database\DMTutorials. This path should exist and contain two sub-folders; Data and Projects. These contain data and project files that will be used in the various exercises.



If you cannot locate these folders, please reinstall Studio 3. If this does not resolve the issue, please contact your CAE Mining support consultant.



Read through the pages under the tutorial heading "Principles".

Exercises The following exercises are available on this page: 

Creating and Saving a New Project

Exercise: Creating and Saving a New Project In this exercise, you are going to cr eate a new Studio project "OPDesign1" , in a new folder C:\Database\MyTutorials\OPDesign, add the relevant data files and then finally save the project. This includes the following tasks: 

Creating a tutorial folder and copying in files



Creating a new project



Checking and saving the project.

Creating a Tutorial Folder and Copying In Files 1.

In Windows Explorer create the folder C:\Database\MyTutorials\OPDesign.

2.

Browse to and open the folder C:\Database\DMTutorials\Data\VBOP\Datamine.

3.

Copy these 5 files: 

_vb_npvmod1.dm



_vb_npvssurfpt.dm



_vb_npvssurftr.dm



_vb_stopopt.dm



_vb_stopotr.dm

4.

Paste the files into your new tutorial folder C:\Database\MyTutorials\OPDesign.

5.

Browse to and open the folder C:\Database\DMTutorials\Data\VBOP\Datamine\OPM.

6.

Copy all 39 files: 

_vb_c_pit240.dm



_vb_c_pitcrest100.dm



_vb_c_pitcrestadj-20.dm



_vb_c_pitcrestadj100.dm



_vb_c_pitrampds.dm




_vb_c_pitrampout.dm



_vb_c_pitramptoe-40.dm



_vb_c_pitramptoe80.dm



_vb_c_toecons.dm



_vb_pitbase-40.dm



_vb_pitmod1.dm



_vb_q_pit-20.dm



_vb_q_pit-20adj.dm



_vb_q_pit.dm



_vb_q_pit100.dm



_vb_res_designpit1.dm



_vb_q_pit20.dm



_vb_q_pit80adj.dm



_vb_q_pit80adj2.dm



_vb_tr_pit0.dm






_vb_tr_pit-20.dm



_vb_tr_pit200.dm



_vb_tr_pit220.dm



_vb_tr_pit260.dm






_vb_trc_pit-20.dm



_vb_trc_pit.dm



_vb_trc_pit0.dm



_vb_trc_pit110.dm



_vb_trc_pit140.dm



_vb_trc_pit240.dm



_vb_trc_pit240pt.dm



_vb_trc_pit240tr.dm



_vb_trc_pit70.dm



_vb_trc_pit80.dm



_vb_trc_PitTopoInt.dm



_vb_trc_PitTopopt.dm



_vb_trc_PitTopotr.dm

7.

Paste the files into your new tutorial folder C:\Database\MyTutorials\OPDesign.

8.

Minimiz e the Explorer Window.

Creating a new Project 1.

Start Studio 3 using the desktop shortcut -or- Start | All Programs | Datamine | Studio 3 .

2.

In the Studio 3 window, select File | New....

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3.

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If the Studio Project Wizard (Welcome ...) dialog is displayed, click Next>.

The welcome dialog isn't shown if t he Skip this page in future option was selected the last time a new project was created. 4.

In the Studio Project Wizard (Project Properties) dialog, define the project Name as 'OPDesign1', browse for the Location 'C:\Database\MyTutorials\OPDesign', select the Automatically add files... option, click Project Settings...:

5.

In the Project Settings dialog, Automatic Project Updates group, select the options shown below, click OK :

6.

Back in the Studio Project Wizard (Project Properties) dialog, click Next>.

7.

In the Studio Project Wizard (Project Files) dialog, check that 42 files have been added automatically, click Next>.

8.

In the Studio Project Wizard (Your project is ready to create) dialog, click Finish.

Checking and Saving the Project


Page 4 of 4



In the Project Files control bar, check that all of the files, selected in the previous sections, have been added to the project and that they are listed in one or more of the various data folders.



Select File | Save -or- in the Standard toolbar, click Save.



This project file will be used for the remaining exercises in this tutorial



The project file can be set to be automatically updated after project changes have been made e.g. importing data, generating legends. This is set in the Options dialog using Tools | Options, and then selecting the Project tab and the Automatic Updating sub-tab. Then, selecting both the Detect New Files... and Detect Files Added... check boxes ensure automatic updating is performed



For more information on project options, consult your Studio 3 online reference Help project (Help | Contents), or the reference topic (open the Project Options dialog and press on your Keyboard or click Help)

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Displaying Mine Design Toolbars

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Disp aying Design Too ars Displaying and customizing the toolbars used in the open pit design process.

Overview In this portion of the tutorial you are going to display and customize toolbars in the Design window that are typically used in the open pit design process.

Prerequisites Required: 

Created a new project and added all the required tutorial files i.e. the ex ercises on the Creating a New Project page.

Links to exercises The following exercises are available on this page: 

Displaying the Open Pit Design Toolbars



Customising Toolbars



Saving the Toolbar Settings to a Profile

Exercise: Displaying the Open Pit Design Toolbars In this exercise you are going to display and dock the toolbars required for completing the exercises in this tutorial. Displaying the Toolbars 1.

Select the Design window.

2.

Using either View | Customization | Toolbars |..., or by right-clicking in the toolbar docking area and selecting Toolbars, display the following toolbars: 

Boolean Operations



Current Objects



DTM Creation



Data Display



Data Filters



Format



Mine Design



Pit Design



Point and String Editing: Advanced



Point and String Editing: Standard



Snapping

Docking the Floating Toolbars 1.

Click inside the header of the floating Mine Design toolbar and drag it into the grey area below the Menu Bar, as shown in the image below:


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Your toolbars will probably be at different locations to those shown in the image above. 2.

Repeat the above step for the remaining, floating toolbars.

Toolbars can be floated inside the Studio 3 main window, or docked in the header area, against the bottom or the sides of the main window.

Top of page Exercise: Customizing a toolbar In this exercise you are going to add the Query Line, Query String and Gradient Convention buttons to the Mine Design toolbar. Adding Buttons to the Toolbar 1.


2.

In the Mine Design toolbar, click More Buttons, select Add or Remove Buttons | Customize....

3.

In the Customize dialog, Commands tab, Categories list, select [All Commands].

4.

Clic k in the Commands list, press .

5.

Find and then drag-and-drop the following into to the right side of the Mine Design toolbar: 

DesignQueryLines



DesignQueryStrings



FormatGradientConvention

6.

In the Customize dialog, click Close.

7.

The toolbar should now contain the three extra buttons, as shown below:

Exercise: Saving the Toolbar Settings to a Profile In this exercise you are going to cre ate an open pit design profile by saving the current toolbar, menu and control bar settings to a Customization File. 

Each time Studio is exited, the current displayed toolbars, menu and control bars are saved to the default Customization File profile.xml, which is located under


Page 3 of 3

C:\Users\U s er n a m e \AppData\Roaming\Datamine\Datamine Studio. 

A custom profile can be loaded from a saved Customization File using View | Customization | Customization State | Load...



Create different profiles e.g. geological modeling, grade estimation, mine design, VR and save each of them to a separate Customization File (.xml)



Use Customization Files to: 

save toolbar settings for different work profiles



create, manage and share standard profiles amongst users within your organization.

Saving the Toolbar Settings to a Profile 1.

Select View | Customization | Customization State | Save....

2.

In the Save As dialog, select the path to your tutorial project folder, define the filename as 'OPDProfile.xml', click Save:

3.

Select File | Save.

Top of page



Page 1 of 4

De ining Mine Design Settings Specifying the open pit design settings for your project.

Overview In this portion of the tutorial you are going to define conventions, general interface and project settings that are typically used during the open pit design process.



Links to exercises The following exercises are available on this page: 

Defining Project Settings




Exercise: Defining Project Settings In this exercise you are going to define the following project settings: 

default string point symbol size



enable automatic redraw



white Design background



Design window grid



evaluation control settings.

Setting a Default Symbol Size for Displayed Data 1.

Select File | Settings....

2.

In the Project Settings dialog, select the Data Display tab.

3.

In the right pane, Symbols group, use the Default symbol size: spin buttons to define a value of '1' mm.

4.

Leave the Project Settings dialog open.

5.

Click Apply.

Automatic Redraw and White Background 1.

Still in the Project Settings dialog, select the Design tab.

2.

In the right pane, Control group, select Enable automatic redraw.

3.

Select the Design Background Color [White].

4.

Leave the Project Settings dialog open.

5.

Click Apply.

Design Window Display Grid Settings 1.


2.

In the Format toolbar, click Grids.


3.

Page 2 of 4

In the Format Display dialog, Grids tab, select the Default grid and define the settings shown below, click OK :

Evaluation Control Settings 1.

Still in the Project Settings dialog, select the Mine Design tab

2.

In the right pane, Evaluation Control group, select the Evaluate Block Model option.

3.

Select Fast evaluation.

4.

Ensure the following check boxes are clear: 

Full cell evaluation



Use Display Legend

5.

Click OK .

6.

Select File | Save.



Clearing the Full cell evaluation check box allows the evaluation commands to run a partial cell evaluation i.e. the portions of block model cells falling outside the evaluated strings or wireframes do not form part of the evaluation. This allows a more accurate evaluation to be done, but is also generally slower.



The default selected item in the Legend drop-down list is used for now, as an evaluation legend will be defined in a later exercise.

Top of page Exercise: Defining Mine Design Settings In this exercise you are going to define the mine design settings: 

metric units



gradient convention to 1:N and positive up



face angle



berm width.

Measurement Unit Settings


All dimensions given in this tutorial are based on metric units. 1.

To ensure your system is in this mode, select Tools | Options.

2.

In the Options dialog, select the Data - General tab.

3.

Set Drawing Units to Metric (mm).

4.

Set Data Units to Metric (m).

5.

Click OK .

Setting Gradient Convention 1.


2.

Select Format | Gradient Convention (grc).

3.

In the Gradient Convention dialog, select the Gradient In option Percent %.

4.

Select the Direction option +ve UP, click OK .

Setting the Road, Berm and Contour Colors 1.


2.

Select Applications | Open Pit | Set Colors | Road (rcol).

3.

In the Studio 3 dialog, check that the color is set to '5.0' i.e. green, click OK .

4.

Select Applications | Open Pit | Set Colors | Berm (bc).

5.

In the Studio 3 dialog, check that the color is set to '3.0' i.e. orange, click OK .

6.

Select Applications | Open Pit | Set Colors | Contour (cc).

7.

In the Studio 3 dialog, check that the color is set to '4.0' i.e. yellow, click OK .

Setting the Face Angle and Berm Width 1.

Select Applications | Open Pit | Set Face Angle (fng).

2.

In the Studio 3 dialog, check that the default face angle is '60' degrees, click OK .

In Studio's pit design tools, road gradients are expressed as percent and face angles are in degrees. 3.

Select Applications | Open Pit | Set Berm Width (sbw).

4.

In the Studio 3 dialog, set the berm width to '8' m, click OK .

5.

Select File | Save.

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Top of page


Page 4 of 4

Viewing Ultimate Pit Shell Models

Page 1 of 3

Viewing U timate Pit S e Mo e s Viewing ultimate pit shell block and wireframe models.

Overview In this part of the tutorial you are going to view ultimate pit shell block model and wireframe model data.



Recommended: 

Displayed and customized the open pit design toolbars; saved a profile i.e. the exercises on the Displaying Design Toolbars page.



Specified project and mine design settings i.e. the exercises on the Specifying Design Settings page.

Files required for the exercises on this page: 



_vb_npvmod1 _vb_npvssurfpt / _vb_npvssurftr

Link to Exercises

The following exercises are available on this page: 


Exercise: Viewing Ultimate Pit Shell Model Data In this exercise, you are going to view the block model and wireframe output from an NPV Scheduler ultimate pit and optimized scheduling process. This includes the following tasks: 



Loading the ultimate pit model data Viewing the model data.

Loading the Ultimate Pit Model Data 1.


2.

Select the Project Files control bar, All Tables folder.

3.

Select, drag-and-drop the following files into the Design window: 

_vb_npvmod1



_vb_npvssurftr

4.

In the View Control toolbar, click Zoom All Data.

5.

In the Design window, check that your view is as shown below:


6.

In the VR window, check that your view is as shown below:

Viewing the Model Data 1.


Page 2 of 3


Page 3 of 3

2.

In the View Control toolbar, click View Settings.

3.

In the View Settings dialog, Section Definition tab, Section Orientation group, select North-South, click OK .

4.

In the Sheets control bar, Design Overlays folder, right-click _vb_npvssurftr/_vb_npvssurfpt (wireframe), select Format.

5.

In the Format Display dialog, Overlays tab, Overlay Format group, Style sub-tab, Display As group, select Intersection, click Apply.

6.

In the Color sub-tab, Color group, select Fixed and the color [Red (2)].

7.

____ In the Line Style group, select the Fixed linestyle [ ], and set Width to [2], click OK .

8.


In the above image, the block model is currently colored on the VALUE (i.e. profit) field using a default legend. The SEQUENCE field also provides valuable information when designing final and interim pits to achieve the highest NPV. The block model and wireframe extents of the pit shell indicate that the pit base is at an elevation (Z value) -40m and the VALUE field values show that the ore is situated in the bottom half of the pit. 9.

Select File | Save.

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Creating a Custom Display Legend

Page 1 of 5

Creating a Custom Disp ay Legen Creating and applying a new display legend for a block model

Overview In this portion of the tutorial you are going to create and apply a custom display legend for a block model.





Loaded and viewed the ultimate pit shell model data i.e. the exercises on the Viewing Ultimate Pit Shell Models page.

Recommended: 






_vb_npvmod1

Link to Exercises






Creating a Custom Display Legend Applying a Legend Querying and Filtering Block Model Cells

Exercise: Creating a Custom Display Legend In this exercise you are going to cre ate a new interval legend named NPV SEQUENCE, for the optimal NPVS extraction field (SEQUENCE) in the block model _npvmod1. The legend will have 6 intervals, will be linear and colored using the standard rainbow color palette. 1.

Select Format | Legends.

2.

In the Legends Manager dialog, click New Legend....

3.

In the Legend Wizard (1): Data Table Column dialog, select the Use Object Field option.

4.

In the Object drop-down list, select [_vb_npvmod1 (block model)]

5.

In the Field drop-down list, select [SEQUENCE], click Next>.

6.

In the Legend Wizard (2): Legend Storage dialog, select the Current Project File option, click Next>:

7.

In the Legend Wizard (3): General dialog, define the legend Name as 'NPV SEQUENCE', check that Type is [Numeric], select the Ranges option, click Next>:

8.

In the Legend Wizard (4): Data Range dialog, define the Number of Items as '6', click Next>:

The Minimum and Maximum values are automatically derived from the object selected on the Data Table Column dialog (step 4), and are read-only. 9.

In the Legend Wizard (5): Legend Distribution dialog, set the Distribution Type to [Linear], select the Equal Width option, click Next>:


Page 2 of 5

10.

In the Legend Wizard: Coloring dialog, set the Color Type Range to [Rainbow blue->red], select the Anti Clockwise transition option, click Preview Legend...

11.

In the Legend dialog, check that you legend appears as shown below:

12.

Close the Legend preview dialog.

13.

Back in t he Legend Wizard: Coloring dialog, click Finish.

14.

In the Legends Manager dialog, check that the new NPV SEQUENCE legend has been added to the list of project file legends, as shown below, click Close:

15.

Select File | Save.

Exercise: Applying a Legend In this exercise you are going to format t he _vb_npvmod1 (block model) overlay in the Design window by coloring it using the newly created


Page 3 of 5

NPV SEQUENCE legend. This exercise follows on directly from the above exercise i.e. Creating a Custom Display Legend and assumes that it has already been completed.

1.


2.

In the Sheets control bar, Design Overlays folder, right-click _vb_npvmod1 (block model), select Format.

3.

In the Format Display dialog, Overlays tab, Overlay Format group, select the Color sub-tab.

4.

In the Color group, select the Legend option and the project legend [NPV SEQUENCE].

5.

Select the Column [SEQUENCE], click OK .

6.

In the Design window, check that the block model has been colored o n the SEQUENCE field values as shown below:

In the above image, the rainbow color sequence blue-red, applied to the SEQUENCE field values, indicates the general extraction sequence that should be followed when designing interim pits. In this view, this would be top-right down to bottom-left. 7.

Select File | Save.

Exercise: Querying and Filtering Block Model Cells In this exercise you are going to filter the _vb_npvmod1 (block model) object so that only cells with a sequence value greater than zero are displayed. This exercise follows on directly from the above exercise i.e. Applying a Legend and assumes that it has already been completed.

1.

In the Design window, check that the view is still the north-south section as displayed in the previous exercise.

2.

In the View Control toolbar, click Move Plane (mpl).

3.

In the Studio 3 dialog, define a distance of '10', click OK .

Before moving, the Design view plane has a fixed X c oordinate value of 6110. This unmoved plane lies between columns of block model cells and although the cell immediately above the view plane, i.e.


Page 4 of 5

towards the screen, is displayed, some queried cell values may return empty results. Moving the view plane, here 10m towards the screen, so that it intersects cells, will prevent this. After moving X=6100. 4.

Select Design | Query | Points (qp).

5.

In the Design window, click inside one of the blue cells lying outside the limits of the pit shell wireframe:

6.

Click Cancel.

7.

In the Output control bar note that the c ells has a SEQUENCE value of '0':

8.

Repeat steps 5 to 7 for a cell inside the pit shell and note that it has a SEQUENCE values greater than zero.

9.

In the Data Filters toolbar, click Filter Model (fm).

10.

In the Expression Builder dialog, using the various controls, define and test the e xpression 'SEQUENCE>0', click OK .

11.

In the Design window, check that the block model has been filtered so that the blue cells (i.e. those with SEQUENCE=0) are no longer displayed, as shown below:


This filtered block model, i.e. with SEQUENCE>0 c ells displayed, will be used to guide the placement of the toe strings during the open pit design process. 12.

Select File | Save.

Top of page


Page 5 of 5


Page 1 of 4

Creating a Pit Base String How to create a base perimeter string for the pit design

Overview In this part of the tutorial you are going to create a perimeter string for the base of the open pit design string model.


Created a new project and added all the required tutorial files i.e. the exercises on the Creating a New Project page.






Created and applied a custom legend, filtered cells, for the NPVS block model i.e. the exercises on the Creating a Custom Display Legend page.

Recommended: 






_vb_npvmod1

Link to Exercises



Exercise: Creating a Pit Base String In this exercise you are going to create a base perimeter for the open pit design string model at the -40m elevation, using the filtered NPVS block model to define the limits. This will include the following tasks: 

Defining data and design plane settings



Creating a new strings object



Drawing the base string by snapping to grids



Saving the new strings object to a Datamine file



Checking the string coordinates. The model is currently colored by the SEQUENCE field which defines the optimal N PVS extraction sequence for the blocks. The block model extents of the pit shell indicate that the pit base is at an e levation (Z value) -40m.

Defining Data and Design Plane Settings 1.


2.

Select the Sheets control bar and expand the Design Overlays folder.

3.

Select only the following overlays (i.e. display these overlays): 

Default Grid




Page 2 of 4

_vb_npvmod1 (block model)

4.


5.

In the View Settings dialog, define the Section Orientation and Mid-Point XYZ coordinate (6110, 5100, -40) parameters shown below, click OK :

6.

In the View Control toolbar, click Zoom In.

7.

In the Design window, drag a zoom rectangle around the displayed block model cells:

Creating a New Strings Object 1.

In the Current Objects toolbar, select the Object Type [Strings], click Create New Object using the default template.

2.

In the Loaded Data control bar, check that the New Strings object is listed that it is the c urrent strings object i.e. highlighted bold:

Drawing the Pit Base String by Snapping to Grids 1.

In the Snapping toolbar, select Snap Mode Grid.

2.

In the Current Objects toolbar, select the Attribute [COLOUR], select the Attribute Value [11 (Bright Blue)].


Page 3 of 4

3.

In the Point and String Editing: Standard toolbar, click New String.

4.

In the Design window, using the coordinates displayed in the Status Panel and the resultant image shown further below (step 11), draw a clockwise string by right-clicking at the following points in sequence: 

XY-coordinate '5910, 5160'



























XY-coordinate '5910, 5040'.

5.

Click Cancel.

6.

In the Point and String Editing: Standard toolbar, click Close String.

7.

In the Snapping toolbar, select Snap Mode Points.

It is important that the snap mode is changed back to points. Not doing so will effect later exercises. 8.

In the Design window, right-click and select Deselect All Strings.

9.

Check that your new base perimeter (closed string) is as shown below:

The start point of the string has a larger symbol than the other points. The above perimeter can be edited or manipulated using the various commands in the Menu Bar's Design menu.


In this exercise the perimeter has been drawn by snapping to grid points; these could also have been drawn without snapping i.e. using left-click when placing points.

Saving the New Strings Object to a Datamine File 1.

In the Loaded Data control bar, right-click on the New Strings object, select Data | Save As.

2.

In the Save New 3D Object dialog, click Single Precision Datamine (.dm) File.

3.

In the Save New Strings dialog, select the path to you tutorial folder, define the File name: as 'pitbase-40', click Save.

4.

In the Loaded Data control bar, check that the New Strings object has been replaced by the object pitbase-40 (strings).

Checking the String Coordinates 1.

In the Project Files control bar, expand the All Files or Strings follder.

2.

Double-click pitbase-40.

3.

In the Datamine Table Editor dialog, check the string point coordinates and color values, select File | Exit :

4.

Back in Studio 3, select File | Save.

You can check your perimeter against the example file _vb_pitbase-40.dm. This example file contains a perimeter with the same number of points, in approximately the same positions, but which were digitized without snapping to a 10x10m grid. As a result of this, the points have slightly different coordinate values.

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Page 4 of 4

TRC - Generating the First Bench

Page 1 of 6

Generating t e First Benc Toe-ramp-crest method: generating the ramp and crest strings for the lowest bench

Overview In this part of the tutorial you are going to use a pit base string (toe string) as a starting point for creating the ramp and c rest strings for the first (lowest) bench in a pit. The Toe-Ramp-Crest design method (for a bottom-up design direction) makes use of toe, ramp and crest string elements, created in that order, to define a bench in the pit. The full pit design is typically done on a bench by bench basis, starting from the lowest bench and working upwards. For a single bench, the toe string is created and adjusted, the ramp is inserted and finally the crest string are added. This method builds ramps that include access to the berms and can be applied working either from the bottom up or the top down.









Recommended: 







Created a pit base string i.e. the exercises on the Creating a Pit Base String page.


_vb_npvmod1



_vb_pitbase-40

Link to Exercises The following exercises are available on this page: 


Exercise: Creating the First Bench In this exercise you are going to use the pit base string _vb_pitbase-40 as a starting point for creating the ramp and crest strings for the first (lowest) bench i.e. the -20m bench, which will be 20m high. This includes the following tasks: 




Saving to a new strings file



Creating the ramp



Editing the toe



Creating the crest



Saving the data.


Page 2 of 6

The face angle and berm width can be c hanged at any time during the design process.



2.

In the Project Files control bar, Strings folder, drag-and-drop the following file into the Design window: 

3.

_vb_pitbase-40

In the Sheets control bar, Design Overlays folder, select only t he following overlays (i.e. display these overlays): 

Default Grid



_vb_pitbase-40 (strings)




4.


5.


6.


7.


8.

In the Design window, drag a zoom rectangle to display the view extents shown below:

Saving To a New Strings File


Page 3 of 6

1.

In the Loaded Data control bar, right-click on the _vb_pitbase-40 (strings) object, select Data | Save As.

2.


3.

In the Save New Strings dialog, select the path to your tutorial folder 'C:/Database/MyTutorials/OPDesign', define the File name: as 'trc_pit-20.dm', click Save.

4.

In the Loaded Data control bar, check that _vb_pitbase-40 (strings) has been replaced by trc_pit-20 (strings).

5.

Check that trc_pit-20 (strings) is the current strings object i.e. highlighted bold.

Creating a Ramp 1.

In the Design window, right-click and select Deselect All Strings (das).

2.

In the Pit Design toolbar, click Create Road Segment (rseg).

3.

Follow the messages displayed on the left side of the Status Bar for the steps below.

4.

In the Design window, select (left-click) the pit base perimeter (this step selects the toe string).

5.

Click at a location outside of the base perimeter (this step defines the high side i.e. crest side, of the toe string).

6.

In the Studio 3 (Road Segment) dialog, define the settings as follows, click OK :

RL at end of road is the elevation at the top of the ramp. 7.

As shown below, left-click close to the required start point (string vertex) on the toe string and then left-click at a location approximately 20m to the north:


The first point defines the inside corner of the ramp and must be snapped to the toe string; the second point indicates the upwards direction of the ramp i.e. north. 8.

In the Design window, check that a green ramp string has been created as shown below:

Editing the Toe String at the Ramp 1.


2.

In the Point and String Editing: Standard toolbar, click Move Point (mpo).

3.

Select the first point south of the ramp and place it 20m to the east, click Cancel.

Page 4 of 6


4.

In the Point and String Editing: Standard toolbar, click Insert Points (ipo).

5.

Place a new point 30m south of the point that has just been moved, click Cancel.

6.


7.

Check that your two toe string points south of the ramp are similar to what is shown below:

Do not edit the road string, as the points on this string contain special control information required for the next stage in the design. If you are unhappy about the shape of the road string, the entire road string should be erased (ers) and the shape of the toe string it is projected from should be modified. Creating the Crest 1.


2.

In the Pit Design toolbar, click Create Road Contour (rcon).

3.

Select the blue toe string.

4.

In the Studio 3 (Create Contour) dialog, define the contour elevation as '-20', click OK :

Page 5 of 6


5.


6.

Check that the yellow crest string (perimeter) has been created as shown below:

Saving the Data 1.

Select File | Save.

2.

In the Save Data/Set Auto Reload dialog, select to Save the trc_pit-20 (strings) object, click OK . If you are not happy with the design at any stage, you can erase the incorrect strings and recreate them using the open pit design commands. The design MUST be restarted from either a toe or crest string, NOT from a road segment.

You can check your design strings against the example file _vb_trc_pit-20.dm.

Top of page Copyright © CAE Datamine Corporate Limited

Page 6 of 6

TRC - Creating a Full Toe-Ramp-Crest Bench

Page 1 of 10

Creating a Fu Toe-Ramp-Crest Benc Toe-ramp-crest method: creating a complete bench sequence

Overview In this part of the tutorial you are going to start with a set of bench strings and create a full bench sequence for a bench i.e. of new toe, ramp and crest strings. The Toe-Ramp-Crest design method (for a bottom-up design direction) makes use of toe, ramp and crest string elements, created in that order, to define a bench in the pit. The full pit design is typically done on a bench by bench basis, starting from the lowest bench and working upwards. For a single bench, the toe string is created and adjusted, the ramp is inserted and finally the crest string are added. This method builds ramps that include access to the berms and can be applied working either from the bottom up or the top down.









Recommended: 






_vb_npvmod1



_vb_trc_pit-20


Creating a Full Toe-Ramp-Crest Bench

Exercise: Creating a Full Toe -Ramp-Crest Bench In this exercise you are going to use the bench strings _vb_trc_pit-20 as a starting point for creating the next bench (bench 0m) consisting of a full sequence of new toe, ramp and crest strings; it will also be 20m high. This includes the following tasks: 







Creating the toe



Moving the toe out



Adjusting and conditioning the toe string



Creating the ramp



Creating the crest




Page 2 of 10

Saving the data.



2.


3.

_vb_trc_pit-20


Default Grid



_vb_trc_pit-20 (strings)




4.


5.


6.


These settings place the Design view plane (the working plane) at an elevation of -20m i.e. the bottom of bench 0m. This allows the block models cells for bench 0m to be displayed and also used to guide the positioning of the new toe string. 7.


8.



Page 3 of 10

Saving To a New Strings File 1.

In the Loaded Data control bar, right-click on the _vb_trc_pit-20 (strings) object, select Data | Save As.

2.


3.

In the Save New Strings dialog, select the path to your tutorial folder 'C:/Database/MyTutorials/OPDesign', define the File name: as 'trc_pit0.dm', click Save.

4.

In the Loaded Data control bar, check that _vb_trc_pit-20 (strings) has been replaced by trc_pit0 (strings).

5.

Check that trc_pit0 (strings) is the c urrent strings object i.e. highlighted bold.

Creating the Toe 1.


2.

In the Design window, select (left-click) the yellow bench -20 crest string.

3.

In the Pit Design toolbar, click Set Berm Width (sbw).

4.

In the Studio 3 (Berm Width) dialog, define the Default Berm Width as '8', click OK :

5.

In the Pit Design toolbar, click Create Road Berm (rbe).

6.


7.

If required, click at a location outside of this perimeter (this defines the berm side of the crest string).

8.


9.

Check that an orange berm (toe) string has been created as shown below, noting the position of the string at the top of the ramp and the block models cells falling outside the toe string in the southern portion of the pit:


Page 4 of 10

Adjusting and Conditioning the Toe String 1.

In the Design window, using the Point and String Editing: Standard toolbar commands Move Points (mpo) and Insert Points (ipo), adjust the toe string in the southern portion of the pit, outwards to include the ore cells, as indicated by the black dashed line shown below:


Page 5 of 10

2.

Check that you have moved three and inserted two points, to place the orange toe string in the position shown below:

3.

Select the adjusted orange toe string and select Design | Condition | Condition String (cond).

4.

In the Studio 3 (Condition String) dialog, define the settings shown below, click OK :

The string will be conditioned so that all chords (segments) are between 4 and 20 metres in length and no internal string angle will be less than 70 degrees. 5.


6.

Check that the conditioned toe string is as shown below:


Page 6 of 10

Creating the Ramp 1.

In the Design window, Design window, select only the adjusted and conditioned orange toe string.

2.

In the Pit Design toolbar, Design toolbar, click Create click Create Road Segment (rseg).

3.

In the Studio 3 (Road 3 (Road Segment) dialog, define the settings shown below, click OK :

RL at end of road is road is the elevation at the top of the ramp. 4.

Follow Follow the the messages messages displaye displayed d on the the left left side side of the the Status Bar for Bar for the steps below.

5.

As shown below, right-click (snap) to the the corner of the toe string where the previous road segment ends ends and then then left-click at a location out towards the north-west:


The first point defines the inside corner of the ramp and must be snapped to the toe string; the second point indicates the upwards direction of the ramp i.e. north-west. 6.

In the Design window, Design window, right-click and select Deselect All Strings (das). (das) .

7.

In the Design window, Design window, check that a green ramp string has been created as shown below:

Page 7 of 10


Creating the Crest 1.

In the Design window, Design window, select the conditioned orange (-20m elevation) toe string.

The Data Properties control Properties control bar can be used to view the properties of the selected string. 2.

In the Pit Design toolbar, Design toolbar, click Create click Create Road Contour (rcon). Contour (rcon).

3.

In the Studio 3 (Create 3 (Create Contour) dialog, define the contour elevation as '0', click OK .

4.

In the Design window, Design window, right-click and select Deselect All Strings (das). (das) .

5.

Check that that the yellow yellow crest crest string string (perimet (perimeter) er) has been been created created as shown shown below: below:

Page 8 of 10


6.

Select Format | VR View | Update VR Objects (vro).

7.

In the VR window, rotate the view and check that your new toe, ramp and crest strings are as shown below:

Saving the Data 1.

Select File | Save.

Page 9 of 10


2.

In the Save Data/Set Auto Reload dialog, select to Save the trc_pit0 (strings) object, click OK . If you are not happy with the design at any stage, you can erase the incorrect strings and recreate them using the open pit design commands. The design MUST be restarted from either a toe or crest string, NOT from a road segment.

You can check your design strings against the example file _vb_trc_pit0.dm.

Top of page


Page 10 of 10

TRC - Designing a Switchback

Designing a Switc

Page 1 of 12

ac

Toe-ramp-crest method: using the complete sequence to create a switchback ramp.

Overview In this part of the tutorial you are going to design the upper portion of a switchback road for a bench, consisting of new ramp, enlarged crest flat and new crest strings. The Toe-Ramp-Crest design method (for a bottom-up design direction) makes use of toe, ramp and crest string elements, created in that order, to define a bench in the pit. The full pit design is typically done on a bench by bench basis, starting from the lowest bench and working upwards. For a single bench, the toe string is created and adjusted, the ramp is inserted and finally the crest string are added. This method builds ramps that include access to the berms and can be applied working either from the bottom up or the top down.









Recommended: 






_vb_npvmod1



_vb_trc_pit70



Exercise: Designing a Switchback

The procedure for creating a switchback is much the same as that used to create a standard spiral ramp section. The general procedure is as follows: 

create the lower half of the bench, using a standard toe-ramp-crest sequence



create the upper portion of the bench, using a reverse direction ramp-crest sequence, using the following guidelines: 

the start point for the upper road is the outside corner (and not the inside corner)



the direction point is given in the opposite direction i.e. in the opposite direction to that of the lower ramp



the crest string at the bottom of the rever se direction ramp requires modification to include a flat area connecting the two ramps, to form the switchback




the upper portion does not have a toe string



a final crest string is created as normal.

Page 2 of 12

A switchback can be created at any elevation within the pit.

In this exercise you are going to use the pit strings _vb_trc_pit70 as a starting point for creating a switchback for the next bench (bench 80m) consisting of a full sequence of new toe, ramp and crest strings; the bench will be 10m high. This includes the following tasks: 







Creating the upper switchback ramp



Enlarging the 70m crest area



Creating the 80m toe



Saving the data.



2.


3.

_vb_trc_pit70


Default Grid



_vb_trc_pit70 (strings)




4.


5.


6.

In the View Settings dialog, define the Section Orientation and Mid-Point XYZ coordinate (6110, 5100, 70) and other parameters shown below, click OK :

These settings place the Design view plane (the working plane) at an elevation of 70m i.e. the bottom of bench 80. This allows the block models cells for bench 80 to be displayed and also used to guide the positioning of the new toe string. The View | Set Viewplane | Snap to Plane (stpl) command can also be used to set the view plane i.e. the design plane elevation. The clipping option is used to display only the data which falls within 20m above or below the selected view plane. Setting the clipping equal to the bench height makes it possible to view the full previous bench and the new bench design strings. 7.


8.



Page 3 of 12


In the Loaded Data control bar, right-click on the _vb_trc_pit70 (strings) object, select Data | Save As.

2.


3.

In the Save New Strings dialog, select the path to your tutorial folder 'C:/Database/MyTutorials/OPDesign', define the File name: as 'trc_pit80', click Save.

4.

In the Loaded Data control bar, check that _vb_trc_pit70 (strings) has been replaced by trc_pit80 (strings).

5.

Check that trc_pit80 (strings) is the current strings object i.e. highlighted bold.

Creating the Upper Switchback Ramp 1.

In the Design window, select the yellow crest string.

2.

In the Pit Design toolbar, click Create Road Segment (rseg).

3.

In the Studio 3 (Road Segment) dialog, define a Road Gradient % of '10', a Road Width of '20', an RL at end of Road of '80', click OK :

RL at end of road is the elevation at the top of the ramp. 4.


5.

As shown below, right-click (snap) to the outside corner of the yellow crest string where the previous road segment ends and then left-click at a location out towards the south:


Page 4 of 12

The first point defines the inside corner of the ramp and must be snapped to the indicated crest string; the second point indicates the upwards direction of the ramp i.e. south. 6.

In the Design window, check that a green ramp string has been created and that the crest string has been automatically modified, as shown below:


Page 5 of 12

Enlarging the 70m Crest Area The flat area connecting the two ramps needs to provide enough turning space for machines traveling on the haul roads and is defined by two crest strings as follows:

1.



an enlarged standard crest string which defines the north-eastern and eastern sides of the flat area



a new short crest string defining the western side of the flat area, the ends of which are snapped to the standard crest and the inside top corner of the previous ramp.

In the Design window, using the Point and String Editing: Standard toolbar commands Move Point (mpo) and Insert Points (ipo), adjust the yellow 70m crest string between the two ramps, outwards to increase the flat area, as indicated by the black dashed line shown below:


Page 6 of 12

2.

Check that you have moved and inserted points, to place the standard yellow crest string in the position shown below:

3.

Select the orange 60m toe string.


4.

Page 7 of 12

Using Design | String Tools | Break | At Point (bs), break this string at the two points shown below, starting with the northern point:

5.

Select the short portion of broken string, in the Pit Design toolbar, click Create Road Contour (rcon).

6.

In the Studio 3 (Create Contour) dialog, define the contour elevation as '70', click OK .

7.


8.

Check that the short yellow crest string (with three segments) has been created as shown below:


9.

Page 8 of 12

Select this short crest string and using Move Points (mpo), move both end points o f this short string, snapping them (right-click) onto the points shown below:

If you are unsure of where the end points are positioned, first move them away into the adjacent white


Page 9 of 12

space using left-click, then move them back in again, this time snapping (right-click) them to the required final points. Here, the northern point of the short crest string snaps to the enlarged standard crest string; the southern point of the short crest string snaps to the top inside corner of the previous ramp string. 10.

Using Design | String Tools | Connect (conn) , following the prompts in the Status Bar, connect the three portions of broken orange 60m toe string shown below:

11.

Zoom out, select the connected 60m toe string and check that it is again a single closed string (perimeter), highlighted yellow in the image below:


Creating the Bench 80 Crest 1.

Select the outer, full standard 70m crest string.

2.


3.

In the Studio 3 (Create Contour) dialog, define the Contour Level as '80', click OK .

4.


5.

Check that a full, yellow 80m crest string has been created as shown below:

Page 10 of 12


The upper ramp of the switchback does not have an orange toe string, but instead uses the crest string which forms part of the lower half ramp. 6.


7.

In the VR window, rotate the view and check that your is as shown below:

Page 11 of 12


Saving the Data 1.

Select File | Save.

2.

In the Save Data/Set Auto Reload dialog, select to Save the trc_pit80 (strings) object, click OK . If you are not happy with the design at any stage, you can erase the incorrect strings and recreate them using the open pit design commands. The design MUST be restarted from either a toe or crest string, NOT from a road segment.


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Page 12 of 12

TRC - Designing at the Topography Surface

Page 1 of 10

Designing at t e Topograp y Sur ace Toe-ramp-crest method: how to design the pit through the topography surface .

Overview In this part of the tutorial you are going to design the topmost portion of the open pit where it intersects the topography surface. The Toe-Ramp-Crest design method (for a bottom-up design direction) makes use of toe, ramp and crest string elements, created in that order, to define a bench in the pit. The full pit design is typically done on a bench by bench basis, starting from the lowest bench and working upwards. For a single bench, the toe string is created and adjusted, the ramp is inserted and finally the crest string are added. This method builds ramps that include access to the berms and can be applied working either from the bottom up or the top down.









Recommended: 






_vb_npvmod1



_vb_trc_pit110



_vb_trc_pit240



_vb_stopopt / _vb_stopotr


Designing Through the Topography Surface

Exercise: Designing Through the Topography Surface In this exercise you are going to use the pit strings _vb_trc_pit110 as a starting point for designing the upper half of bench 120 and then the toe and crest strings up to 240m elevation. This includes the following tasks: 







Creating the remainder of bench 120



Designing toes and crests for bench 140



Viewing the toe and crest strings up to 240m elevation




Page 2 of 10

Saving the data.



2.


3.

_vb_trc_pit110


Default Grid






_vb_stopotr/_vb_stopopt (wireframe)




4.

In the Sheets control bar, Design Overlays folder, right-click _vb_stopotr/_vb_stopopt (wireframe), select Format.

5.

In the Format Display dialog, Overlays tab, Overlay Format group, Style sub-tab, Display As group, select Intersection, click Apply.

6.

In the Color sub-tab, Color group, select Fixed and the color [(10) Bright Green].

7.

____ In the Line Style group, select the Fixed linestyle [ ], and set Width to [2], click OK .

8.


9.


10.


These settings place the Design view plane (the working plane) at an elevation of 110m i.e. the mid elevation for bench 120. The clipping option is used to display only the data which falls within 20m above or below the selected view plane. Setting the clipping equal to the bench height makes it possible to view the full previous bench and the new bench design strings. 11.


12.



Page 3 of 10

In the above image the green intersection line, cutting through the southern portion of the pit, is the 110m contour for the topography surface. This line is at the same elevation as the top of the display lower half of bench 120, which consists of a fu ll set of toe, ramp and crest strings. 13.


14.

In the VR window, pan, rotate and zoom the view and note that the ramp and a portion of the 110m elevation crest string extend above the topography surface, as shown below:


Page 4 of 10

In the above image the topography wireframe surface has been clipped.



2.


3.

In the Save New Strings dialog, select the path to your tutorial folder 'C:/Database/MyTutorials/OPDesign', define the File name: as 'trc_pit140', click Save.

4.

In the Loaded Data control bar, check that _vb_trc_pit110 (strings) has been replaced by trc_pit140 (strings).

Creating the Remainder of Bench 120 As the 110m elevation ramp now extends beyond the topography surface, no more ramp strings are required for the design. The remainder of bench 120 is defined by a single crest string at 120m elevation. 1.


2.

In the Design window, select the yellow 110m elevation crest string.

3.


4.

If prompted in the Status Bar, select a position outside of the selected perimeter (this indicates the high side i.e. the side on which to create the crest string).

5.

In the Studio 3 (Create Contour) dialog, define the contour elevation as '120', click OK .

6.


7.

Check that the yellow 120m elevation crest string has been created as shown below: rcon


Page 5 of 10

Designing Toes and Crests For Bench 140 As the 110m elevation ramp now extends beyond the topography surface, no more ramp strings are required for the design. From here on upwards, the remainder of the pit design only consists of bench toe and crest strings. These are created up to a elevation (here 240m) so that the final crest is positioned completely above the surface topography wireframe. 1.


2.

In the View Control toolbar, click Snap to Plane.

3.

In the Design window, snap (right-click) to the yellow 120m crest string.

4.

While moving the cursor in the Design window, check that the elevation displayed in the Status Bar is Z: 120.000.

5.

Select the yellow 120m crest string.

6.

In the Pit Design toolbar,click Create Road Berm and click anywhere outside the crest string (to indicate the berm side of the crest string).

7.


8.

Check that the orange 120m elevation berm string has been created as shown below:


9. 10.

Page 6 of 10

In the View Control toolbar, click Zoom In and view the northern half of the pit. Using the Point and String Editing: Standard toolbar commands Delete Points (dpo) and Move Points (mpo), adjust the toe string in the north-eastern portion of the pit, outwards to include the ore cells, as indicated by the black dashed line shown below:


11.

Check that you have deleted and moved points, to place the orange toe string in the position shown below:

12.

In the View Control toolbar, click Zoom Out.

13.

Select the adjusted orange 120m elevation toe string.

14.


15.

Page 7 of 10

Following the prompt in the Status Bar, select a position outside of the selected perimeter (this indicates the high side i.e. the side on which to create the crest string).

16.

In the Studio 3 (Create Contour) dialog, define the Contour Level as '140', click OK .

17.


18.

Check that the yellow 140m elevation crest string has been created as shown below:


Page 8 of 10

The image above shows the result of constructing bench 140 with just a pair o f toe and crest strings. 19.


20.

In the VR window, pan, rotate and zoom the view and note that the additional bench 140 toe and crest strings and their relationship to the clipped topography surface:


Page 9 of 10

Saving the Data 1.

Select File | Save.

2.

In the Save Data/Set Auto Reload dialog, select to Save the trc_pit140 (strings) object, click OK .


Viewing the Toe and Crest Strings up to 240m Elevation 1.


2.


3.

_vb_trc_pit240


Default Grid






_vb_stopotr/_vb_stopopt (wireframe)




4.

In the View Control toolbar, click Zoom Extents.

5.

Click Use Clipping to toggle clipping OFF.

6.


7.

In the VR window, pan, rotate and zoom the view and note the additional toe and crest strings and their relationship to the topography surface:


The 110m elevation ramp extends just above the topography surface. From here on upwards, the remainder of the pit design only consists of bench toe and crest strings up to a elevation of 240m. It is important that the final crest string is generated so that it lies completely above the topography wireframe surface.

If you are not happy with the design at any stage, you can erase the incorrect strings and recreate them using the open pit design commands. The design MUST be restarted from either a toe or crest string, NOT from a road segment.

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Page 10 of 10

WM - Adding Attribute BENCH Interactively

A

Page 1 of 3

ing an Setting a BENCH Attri ute

Adding and Setting a BENCH attribute interactively in the design window

Overview In this part of the tutorial you are going to add a new attribute column and set its value for a set of open pit design strings.









Recommended: 






_vb_trc_pit0


Adding and Setting a BENCH Attribute Interactively

Exercise: Adding and Setting a BENCH Attribute Interactively In this exercise you are going to add a user defined BENCH column to the bench strings _vb_trc_pit0 and then set the attribute on the strings interactively in the Design window. This includes the following tasks: 







Adding a new BENCH attribute



Setting the BENCH attribute



Saving the data.



2.


3.

4.

_vb_trc_pit0


Default Grid






Page 2 of 3

5.


6.

In the View Settings dialog, define the parameters shown below, click OK :

7.

In the Design window, check that the two lowest benches of the toe-ramp-crest pit design are displayed, as shown below:



2.


3.

In the Save New Strings dialog, select the path to your tutorial folder 'C:/Database/MyTutorials/OPDesign', define the File name: as 'trc_pit0BENCH.dm', click Save.

4.

In the Loaded Data control bar, check that _vb_trc_pit0 (strings) has been replaced by trc_pit0BENCH (strings).

5.

Check that trc_pit0BENCH (strings) is the current strings object i.e. highlighted bold.

Adding the BENCH Column 1.

In the Loaded Data control bar, right-click trc_pit0BENCH (strings), select Add Column.

2.

In the Add Column dialog, define the column Name as 'BENCH', Type [Numeric], Default Value [absent(-)], click OK .

Setting the BENCH Attribute 1.

In the Design window, select the blue toe, green ramp and yellow crest string for the lowest bench i.e. bench -20 (toe elevation -


Page 3 of 3

40m, crest elevation -20m).

The three strings can be selected either by dragging a selection rectangle or by individually selecting the strings using +Click. 2.

Select Design | Edit Attributes | Edit (eat).

3.

In the Edit Attributes dialog, define a BENCH attribute value of '-20', click OK .

4.

In the Studio 3 confirmation dialog, click Yes.

5.

Repeat steps 1 to 4 for the next three toe, ramp and crest strings, setting a BENCH value of '0'.

6.

In the Design window, select individual strings and check the BENCH values displayed in the Data Properties control bar.

Saving the Data 1.

Select File | Save.

2.

In the Save Data/Set Auto Reload dialog, select to Save the trc_pit0BENCH (strings) object, click OK .

If you are not happy with the design at any stage, you can erase the incorrect strings and recreate them using the open pit design commands. The design MUST be restarted from either a toe or crest string, NOT from a road segment.

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WM - Generating a Pit DTM

Page 1 of 4

Generating a Pit DTM Generating a pit DTM

Overview In this part of the tutorial you are going to create a DTM wireframe model from a set of untrimmed open pit design strings.



Recommended: 






_vb_trc_pit240


Generating a DTM of the Pit Design

Exercise: Generating a DTM of the Pit D esign In this exercise you are going to generate a wireframe surface, using DTM methods, for the untrimmed open pit design strings _vb_trc_pit240. This includes the following tasks: 

Defining data and view settings



Generating the DTM



Saving the DTM to a Datamine file.

Defining Data and View Settings 1.


2.

Select the Project Files control bar, Strings folder.

3.


4.

_vb_trc_pit240


Default Grid



_vb_trc_pit240 (strings).

5.


6.


7.



8.

Page 2 of 4


Generating the DTM 1.

In the DTM Creation toolbar, click Create DTM.

2.

In the Make DTM - General Options dialog, Output group, select the New Object option, enter the name 'trc_pit240tr'.

3.

In the General Options group, clear the Use boundary strings option, click Next>:


Page 3 of 4

4.

In the Make DTM - Select DTM Points and Strings dialog, Objects group, select only [ _vb_trc_pit240 (strings)], click Finish.

5.

In the Loaded Data control bar, check that the new trc_pit240tr object is listed.

6.


7.

In the VR window, rotate the view and check that the pit DTM surface correctly follows the pit design strings as shown below:


Page 4 of 4

Saving the DTM to a Datamine File 1.

In the Loaded Data control bar, right-click on the trc_pit240tr object, select Data | Save As.

2.


3.

In the Save New Strings dialog, select the path to you tutorial folder, define the File name: as 'trc_pit240tr.dm', click Save.

4.

In the Loaded Data control bar, check that the trc_pit240tr object has been replaced by trc_pit240tr/trc_pit240pt (wireframe).

5.

Select File | Save.

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WM - Generating a Pit-Topo Intersection

Page 1 of 5

Generating a Pit-Topograp y Intersection How to create a string at the topography and pit wireframes intersection.

Overview In this part of the tutorial you are going to create an intersection string for the open pit DTM and to pography surface wireframes.



Recommended: 







Generated a pit DTM i.e. the exercises on the Generating a Pit DTM page.


_vb_trc_pit240pt / _vb_trc_pit240tr





Generating a Pit-Topography Intersection String

Exercise: Generating a Pit-Topography Intersection String In this exercise you are going to generate a new string representing the intersection between the _vb_trc_pit240tr/_vb_trc_pit240pt and the _vb_stopotr/_vb_stopopt wirerframe objects .This includes the following tasks: 




Generating the intersection



Conditioning the string



Saving the intersection string to a Datamine file.



2.

Select the Project Files control bar, Wireframe Triangles folder.

3.

Select, drag-and-drop the following files into the Design window:

4.



_vb_stopotr



_vb_trc_pit240tr


Default Grid



_vb_trc_pit240tr/_vb_trc_pit240pt (wireframe)



_vb_stopotr/_vb_stopopt (wireframe).


Page 2 of 5

5.

In the Sheets control bar, Design Overlays folder, right-click _vb_stopotr/_vb_stopopt (wireframe), select Format

6.

In the Format Display dialog, Overlays tab, Overlay Format group, Style sub-tab, Display As group, check that Faces is selected, click OK .

7.


8.


9.


10.


Generating the Intersection 1.

Select Wireframes | Boolean Operations | Strings from Intersections .

2.

In the Strings from Intersections dialog, select the topography and pit wireframe objects as shown below, click OK :


3. 4.

In the Loaded Data control bar, check that the new strings object Intersection: _vb_stopotr/_vb_stopopt and _vb_trc_pit240tr/_vb_trc_pit240pt is displayed. In the Design window, select the intersection string.

If you are having difficulty seeing the newly generated intersection string, the pit strings and topography wireframe overlays can be hidden temporarily. 5.

Select Design | Edit Attributes | Edit.

6.

In the Edit Attributes dialog, select the COLOUR [(9) Bright Red], click OK .

7.

In the Studio 3 'Are you sure ...' confirmation dialog, click Yes.

8.


9.

Check that your red intersection string has been created as shown below:

Conditioning the Intersection String

Page 3 of 5


Page 4 of 5

1.

In the Design window, select the red intersection string.

2.

Select Design | Query | Strings (qst), click Cancel.

3.

In the Output control bar, note that the string contains 538 vertices.

4.

Select Design | Condition | Remove Crossovers (tcr).

5.

Select Design | Query | Strings (qst), click Cancel.

6.

In the Output control bar, note that the string now contains 523 vertices.

7.


8.

In the VR window, rotate and zoom the view and check that the red string lies along the intersection of the pit DTM and topography surface as shown below:

Other string conditioning commands (Design |Condition | ...) can be used to perform additional conditioning e.g. Condition String., to specify minimum and maximum string segment (chord) lengths and internal angles. In this exercise, no further conditioning is needed for this intersection string.

Saving the Intersection String to a Datamine File 1.

In the Loaded Data control bar, right-click on the Intersection: _vb_stopotr/_vb_stopopt and _vb_trc_pit240tr/_vb_trc_pit240pt object, select Data | Save As.

2.


3.

In the Save dialog, select the path to you tutorial folder, define the File name: as 'trc_PitTopoInt.dm', click Save.

4.

In the Loaded Data control bar, check that the Intersection: _vb_stopotr/_vb_stopopt and _vb_trc_pit240tr/_vb_trc_pit240pt object has been replaced by the object trc_PitTopoInt (strings).

5.

Select File | Save.

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Page 5 of 5

WM - Trimming the Design Strings

Page 1 of 4

Trimming t e Design Strings Trimming the pit design strings against the topography surface

Overview In this part of the tutorial you are going to trim the design strings to topography using the pit-topography intersection string.



Recommended: 










Generated a pit-topography intersection string i.e. the exercises on the Generating a Pit-Topo Intersection page.


_vb_trc_pit240



_vb_trc_PitTopoInt




Link to Exercises



Exercise: Trimming the Design Strings In this exercise you are going to trim the _vb_trc_pit240 design strings to lie below the topography surface using the _vb_trc_PitTopoInt pittopography intersection string. This includes the following tasks: 




Generating the intersection



Trimming the design strings



Saving the trimmed design strings to a new Datamine file.



2.


3.


_vb_stopotr

4.

Select the Project Files control bar, Strings folder.

5.


_vb_trc_pit240




6.

Page 2 of 4

_vb_trc_PitTopoInt


Default Grid



_vb_trc_PitTopoInt (strings)







7.


8.


9.


10.


11.


12.




1.

In the Design window, select the red intersection string.

2.

Select Design | String Tools | Clip to Perimeter.

3.

Following the 'Select a point on the deletion side' prompt displayed in the left side of the Status Bar.

4.

Page 3 of 4

In the Design window, click anywhere outside the intersection string, click Cancel.

5.

Right-click and select Deselect All Strings (das).

6.

Check that the pit design strings have been trimmed to only lie inside the red intersection string, as shown below:

7.


8.

In the VR window, rotate, zoom and pan the view and check that the pit design strings have been trimmed to lie only below the topography surface:


Page 4 of 4

Saving the Trimmed Strings to a New Datamine File 1.


2.


3.

In the Save New Strings dialog, select the path to you tutorial folder, define the File name: as 'trc_pit.dm', click Save.

4.

In the Loaded Data control bar, check that the _vb_trc_pit240 (strings) object has been replaced by trc_pit (strings).

5.

Select File | Save.

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WM - Merging the Pit and Topography DTMs

Page 1 of 4

Merging t e Pit an Topograp y DTMs Combining the pit and topography

Overview In this part of the tutorial you are going to merge the pit and topographic DTMs.



Recommended: 












_vb_trc_pit240pt / _vb_trc_pit240tr

Link to Exercises


Merging the Pit and Topography DTMs

Exercise: Merging the Pit and Topography DTMs In this exercise you are going to use boolean commands to generate a merged pit and topography wireframe surface using the _vb_trc_pit240tr/_vb_trc_pit240pt and _vb_stopotr/_vb_stopopt wirerframe objects .This includes the following tasks: 




Merging the pit and topography DTMs



Saving the merged wireframe object to a Datamine File.



2.


3.

Select, drag-and-drop the following files into the Design window:

4.

5.



_vb_stopotr



_vb_trc_pit240tr


Default Grid






_vb_trc_pit240tr/_vb_trc_pit240pt (wireframe)



Page 2 of 4

6.


7.


8.


9.


10.


Merging the Pit and T opography DTMs 1.

Select Wireframes | Boolean Operations | Extract Separate .

2.

In the Extract Separate dialog, select the topography (object 1) and open pit (object 2) wireframe objects.

3.

Clear both Verify check boxes.

4.

Select the Output group options, check the other highlighted options, click OK :


Page 3 of 4

5.

In the Loaded Data control bar, check that the new Extract: _vb_stopotr/_vb_stopopt and _vb_trc_pit240tr/_vb_trc_pit240pt object is listed.

6.


Default Grid



Extract: _vb_stopotr/_vb_stopopt and _vb_trc_pit240tr/_vb_trc_pit240pt.

7.

In the Design window, check that your merged wireframe object is as shown below:

8.



9.

Page 4 of 4

In the VR window, rotate, zoom and pan the view and check that the merged wireframe consists of a green topography surface outside the pit and an orange pit surface inside the topography:

In the above wireframe extraction and merging process, the following wireframe surface portions were not retained : 

pit above the topography



topography inside the pit.

When running this command, it may be necessary to run it a number of times before the desired result is obtained. Saving the Merged Wireframe Object to a Datamine File 1.

In the Loaded Data control bar, right-click on the Extract: _vb_stopotr/_vb_stopopt and _vb_trc_pit240tr/_vb_trc_pit240pt object, select Data | Save As.

2.


3.

In the Save New Strings dialog, select the path to you tutorial folder, define the File name: as 'trc_PitTopotr', click Save.

4.

In the Loaded Data control bar, check that the Extract: _vb_stopotr/_vb_stopopt and _ vb_trc_pit240tr/_vb_trc_pit240pt object has been replaced by trc_PitTopotr/trc_PitTopopt (wireframe).

5.

Select File | Save.

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Page 1 of 6

Eva uating t e Pit Design Wire rame Evaluating a pit design wireframe and grade block model

Overview In this portion of the tutorial you are going to evaluate a pit design wireframe using a grade block model.


Created a new project and added all the required tutorial files i.e. the exercises on the Creating a New Project page.




Recommended: 









_vb_pitmod1



_vb_npvssurfpt / _vb_npvssurftr



_vb_trc_pittopotr/ _vb_trc_pittopopt


Evaluating the Pit Design Wireframe and Grade Block Model

Exercise: Evaluating the Pit Design Wireframe and Grade Block Model In this exercise you are going to evaluate the pit design wireframe _vb_trc_pittopotr/ _vb_trc_pittopopt using the grade block model _vb_mod1. This includes the following tasks: 




Creating an evaluation legend



Applying the evaluation legend



Defining evaluation settings



Evaluating the pit



Saving the results to a Datamine file



Checking the evaluation results.

When using QUICKPIT you must always start with a closed string that represents a toe, pit base or pit top.



2.


_vb_pitmod1



_vb_trc_PitTopotr


3.

Page 2 of 6

In the Sheets control Sheets control bar, Design Overlays folder, Overlays folder, select only the following overlays overlays (i.e. display these overlays): 

Default Grid



_vb_npvssurftr/_vb_npvssurfpt _vb_npvssurftr/_vb_npvssurfpt (wireframe) (wireframe)



_vb_trc_pittopotr/ _vb_trc_pittopotr/ _vb_trc_pittop _vb_trc_pittopopt opt (wireframe) (wireframe)



_vb_pitmod1 _vb_pitmod1 (block model) model)

4.

In the Loaded Data control Data control bar, unload all other block model objects.

5.

Check that _vb_pitmod1 _vb_pitmod1 is the current block model object i.e. highlighted bold.

6.

In the Sheets control Sheets control bar, Design Overlays folder, Overlays folder, right-click _vb_trc_pittopotr/ _vb_trc_pittopotr/ _vb_trc_pittop _vb_trc_pittopopt opt (wireframe) (wireframe),, select Format. Format.

7.

In the Format Display dialog, Display dialog, Overlays tab, Overlays tab, Overlay Format group, Format group, Style sub-tab, Style sub-tab, Display As group, As group, select Intersection, Intersection, click Apply. Apply.

8.

____ In the Color sub-tab, Color sub-tab, Line Style group, Style group, select the Fixed linestyle [ ], and set Width to [2], click OK click OK .

9.

Repe Repeat at step stepss 6 to to 8 for for _vb_npvssurftr/_vb_npvssurfpt _vb_npvssurftr/_vb_npvssurfpt (wireframe) (wireframe),, setting the color to Red (2).

10.

In the View Control toolbar, Control toolbar, click Zoom click Zoom All Data. Data .

11.

In the View Control toolbar, Control toolbar, click View Settings. Settings.

12.

In the View Settings dialog, Settings dialog, define the Section Orientation and Orientation and Mid-Point XYZ Mid-Point XYZ coordinate (X: 6000) parameters shown below, click OK :

13.

In the View Control toolbar, Control toolbar, click Zoom click Zoom In. In.

14.

In the Design window, Design window, drag a zoom rectangle to display the view extents shown below:

In the above image, the red intersection line defines the ultimate pit limits and the orange the design pit limits.


Creating an Evaluation Legend 1.

In the Sheets control Sheets control bar, Design Overlays folder, Overlays folder, right-click _vb_pitmod1 _vb_pitmod1 (block model) model),, select Quick Legend. Legend.

2.

In the Quick Legend dialog, Legend dialog, define the settings shown below, click OK :

3.

Select Format | Legend. Legend.

4.

In the Legends Manager dialog, Manager dialog, expand the Project Legends folder.

5.

Expand Expand the newly newly create created d Evaluation Legend 1 legend 1 legend and check that it contains the legend items shown below:

6.

Right-cli Right-click ck the the legend legend item item [ABSENT] [ABSENT],, select select Delete. Delete.

7.

Check Check that that you have have three three remainin remaining g legend legend items. items.

8.

Right-cli Right-click ck the first remai remaining ning lege legend nd item, item, select select Edit. Edit.

9.

In the Legend Item Properties dialog, Properties dialog, Item Description group, Description group, clear Automatical clear Automatically ly generate description. description.

10.

Type in in th the Description 'Waste'. Description 'Waste'.

11.

Sele Select ct the Item Type Range, Type Range, select the minimum [Absent] and define the maximum as '0.5'.

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12.

In the Item Format group, Format group, set the Fill Color to Color to [(6) Cyan].

13.

Sele Select ct the Use fill for line color option. color option.

14.

Click OK OK .

15.

Back in in th the Legends Manager dialog, Manager dialog, select the second remaining legend item and using steps 8 to 14 above, define the following:

16.



Description 'Stockpile'. Description 'Stockpile'.



Select the Item Type Range, Type Range, define the minimum as '0.5' and the maximum as '1.0'.



In the Item Format group, Format group, set the Fill Color to Color to [(5) Green].



Select the Use fill for line color option. color option.

Back in in th the Legends Manager dialog, Manager dialog, select the second remaining legend item and using steps 8 to 14 above, define the following: 

Description 'Mill'. Description 'Mill'.



Select the Item Type Range, Type Range, define the minimum as '1.0' and select the maximum [Ceiling].



In the Item Format group, Format group, set the Fill Color to Color to [(2) Red].



Select the Use fill for line color option. color option.

17.

Back in in th the Legends Manager dialog, Manager dialog, check that your modified legend is as shown below:

18.

Click Close Close..

19.

Select Design | Redraw. Redraw.

20.

In the Design window, Design window, check that the block model has been colored on AU as shown below:

Defining Evaluation Settings 1.

Select File | Settings. Settings.

2.

In the Project Settings dialog, Settings dialog, select the Mine Design tab. Design tab.

3.

In the Evaluation Control group, Control group, define the settings shown below, click OK :


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Models | Evaluate | Use Model Data (umd) could also be used to set evaluation to using block model data.

Evaluating the Pit 1.


2.

In the View Settings dialog, Section Orientation group, select Horizontal, click OK .

3.

Select Models | Evaluate | Wireframe (evw).

4.

In the Evaluate Wireframe dialog, select the design pit _vb_trc_pittopotr/ _vb_trc_pittopopt (wireframe) object, define the parameters shown below, click OK :

5.

In the Studio 3 Block Identifier dialog, define the Mining Block Identifier as '1', click OK .:

6.

In the Accept Evaluation Results dialog, check the results, click Yes.

7.

In the Loaded Data control bar, check that a new Results object is listed.

8.

Repeat steps 2 to 4 for the ultimate pit _vb_npvssurftr/_vb_npvssurfpt (wireframe) object, using a Mining Block Identifier value of '2'.

Saving the Results to a Datamine File 1.

In the Loaded Data control bar, right-click on the RESULTS object, select Data | Save As.

2.


3.

In the Save New Strings dialog, select the path to you tutorial folder, define the File name: as 'Res_DesignPit1', click Save.

4.

In the Loaded Data control bar, check that the RESULTS object has been replaced by the object Res_DesignPit1(table).

5.

Right-click , Res_DesignPit1(table) , select Data | Unload.

Open Pit Design 1

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