Evaluating the Pit Design Wireframe 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.

Link to Exercises

The following exercises are available on this page:

• 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:

• Defining data and view settings

• 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.

 

Defining Data and View Settings

1. Select the Design window.

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

   • _vb_pitmod1

   • _vb_trc_PitTopotr

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

   • Default Grid

   • _vb_npvssurftr/_vb_npvssurfpt (wireframe)

   • _vb_trc_pittopotr/ _vb_trc_pittopopt (wireframe)

   • _vb_pitmod1 (block model)

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

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

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

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

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

9. Repeat steps 6 to 8 for _vb_npvssurftr/_vb_npvssurfpt (wireframe), setting the color to Red (2).

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

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

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

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

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

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

3. Select Format | Legend.

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

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

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

7. Check that you have three remaining legend items.

8. Right-click the first remaining legend item, select Edit.

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

10. Type in the Description 'Waste'.

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

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

13. Select the Use fill for line color option.

14. Click OK.

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

    • Description 'Stockpile'.

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

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

    • Select the Use fill for line color option.

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

    • Description 'Mill'.

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

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

    • Select the Use fill for line color option.

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

18. Click Close.

19. Select Design | Redraw.

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

Defining Evaluation Settings

1. Select File | Settings.

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

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

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

Evaluating the Pit

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

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. In the Save New 3D Object dialog, click OK.

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.
   
   

   Unloading the results table ensures that any future evaluations are saved to a new RESULTS object.

Checking the Evaluation Results

1. In the Project Files control bar, expand the All Tables or Results follder.
2. Double-click Res_DesignPit1.
3. In the CAE 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 evaluation results against the example _vb_res_designpit1.

 

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