Update Toe

Use the Update Toe option to create advanced solids and lines in a simple and fast manner. These solids can be used to calculate reserves from a block model or to calculate volumes from a triangulation.

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Instructions

Click the Update Toe button on the Open Cut Design toolbar.

Or

On the Open Pit menu, point to Open Cut Design, and then click Update Toe.

This panel consists of the following tabs:

• Toe/Crest Expansion
• Result
• Report

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Toe/Crest Expansion tab

Toe

Expansion line

Digitise expansion line

Select this option to digitise the expansion line of the new toe. The default value for the working RL can either come from the elevation value of the first snapped point or from using a specified elevation value.

Default batter angle

Enter the default batter angle. This value will be used on faces on the new crest.

Select expansion line

Select this option to pick the new toe from an existing expansion line.

Intersections

The RL value for toe intersections can either come from the current RL value, the expansion line or from using the average RL value.

Crest

Expansion line

Project toe expansion

The documentation for this option has not yet been written.

Digitise expansion line

Select this option to digitise the expansion line of the new toe. The default value for the working RL can either come from the elevation value of the first snapped point or from using a specified elevation value.

Select expansion line

Select this option to pick the new toe from an existing expansion line.

Intersections

The RL value for toe intersections can either come from the current RL value, the expansion line or from using the average RL value.

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Result tab

Resulting objects

Save expansion polygons in layer

Select this check box to save the resulting polygons in a nominated layer.

Save expansion lines

Select this check box to save the expansion lines in a nominated layer.

Layer name

Select the layer that will be used to store the expansion polygons and lines.

The drop-down list contains the names of all layers found within the currently open design database. If you select an existing layer, then the resulting data will be appended to the nominated layer. If you enter the name of an existing layer that is not currently loaded, then you will need to confirm whether you want to load the layer or replace it, i.e. overwrite its contents.

To create a new layer, enter the layer name. The layer name:

• may contain up to 40 characters.
• must begin with an alphanumeric character [0-9] or [a-z].
• cannot include spaces.
• can include hyphens [ - ], plus signs [ + ], underscores [ _ ], periods/dots [. ].
• can include the special characters of ÁÂÃÀÇÉÊÍÓÔÕÚÜÑ that are used in the Spanish and Portuguese languages.

Build a solid triangulation with expansion

Select this check box to build a triangulation along the expansion.

Use control points on a solid surface

Select this check box to create solid triangulations that follow the collars of each blasthole. If this check box is not checked, then a flat solid will be created for the wire frame and volume. It is necessary to have a layer which contains collars of blastholes or control points to use this option.

Name

Enter the name for the resulting triangulation file. The list contains all triangulations in the current working directory. Click Browse to select a file from another location. Selecting an existing file will prompt you to confirm that you want to overwrite the file's original contents.

To create a new file, enter the file name and file extension.

To save a triangulation within an existing triangulation database, use the Browse button to locate the applicable ' .tri ' file. Once found, double-click on the file to display the Select Triangulation panel.

To replace an existing triangulation, click on the desired triangulation before clicking OK. To create a new a triangulation, enter the file name and file extension before clicking OK. Selecting an existing file will prompt you to confirm that you want to overwrite the file's original contents.

Colour

Select a colour for the resulting triangulation.

Translucency (%)

Select this check box to apply a level of translucency to the resulting triangulation. When the slider is to the far left end, then the triangulation is solid therefore not translucent. When the slider is at the far right end, then the triangulation is fully translucent (invisible).

Alternatively, you can enter a translucency percentage, with '0' being solid and '100' being fully translucent.

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Report tab

Reserve calculation

Calculate tonnage

Select this option to calculate the tonnage inside solid triangulations. You will need to enter the average density of the material.

Calculate reserves

Select this option to calculate reserves from a nominated block model file.

The drop-down list contains all block models found within the current working directory. Click Browse to select a file from another location.

Open report window

Select this check box to display the results in the Report Window.

This panel also contains the following two tabs, each of which are described in detail below.

• General
• Advanced

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General tab

General Reserves

Select this check box to calculate reserves for grade variables using grade cutoffs.

Grade variables

Select the grade variables that will be used in the calculation (a maximum of 20 variables).

Cutoffs

Use cut off grades

Select this check box to use cut off grades. Select the Define cutoffs option to display the Define cutoffs panel.

Cut off set by values

Select this option to cut off the grade variable at specific grade values. Up to 16 cutoff values can be specified.

Cut off set by increment

Select this option to cut off the grade variable at specific increments. You will need to specify the range as well as the increment value.

Parameters

Use zone breakdown

Select this check box to use a zone variable.

Use density value

Select this option to use a specific density value.

Use density variable

Select this option to use the value stored in a nominated grade variable. The drop-down list contains all variables found in the nominated block model.

Output

Report file

Specify the name of the report file ( .rep ) that will be used to store the resulting information.

The drop-down list contains all .rep files found within your current working directory. Click Browse to select a file from another location.

To create a new file, enter the file name and file extension.

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Advanced tab

Advanced Reserves

Select this check box to calculate advanced reserves. You will need to nominate an existing reserves specification file ( .res ), an existing report specification file ( .tab ) and the name of the resulting report file ( .rep ). The appropriate files can either be selected from the drop-down lists or through using the Browse buttons.

To create a new report file, enter the file name and file extension. By default, the resulting file will be stored in the current working directory. Use the Browse option to select a different file location.

Note:  Ensure that there are no regions in the nominated report specification file prior to running this option. You may need to edit the .res file (through a text editor) and delete any regions.

Click OK.

Select the start and end points of the insertion segment, then confirm that the correct segment has been selected.

Digitise the new toe string for the advanced. Ensure that the last point digitised is not the last point in the insertion segment.

Confirm whether to accept or reject the base string. If the Project toe expansion option (under the Toe/Crest Expansion tab) was selected, then the Bench Projection panel displays.