Optimized Pit Design

This command uses a max flow algorithm to determine the ultimate economic pit. This is a very automated routine with very few prompts. When the command is executed, you will be prompted for a value block model (.bm file). This file is created from the Prepare Value Block Model command. The below dialog will then appear to set the minimum and maximum slope angles for the ultimate pit.


The slope angles set in the above dialog are measured in degrees from the horizontal direction. This algorithm is limited in that slope angles may only be specified in the four cardinal directions.

After setting these angles, the program will create two .tin files. The first .tin file represents the pit shell as if all blocks were mined while respecting the maximum highwall angles. The second .tin file represents the optimized pit. If no economic solution exists, then only the first .tin file will be created.

The below image shows a block model with a topography .tin file.

The below image shows the same block model with the optimized pit shell .tin file.



Pulldown Menu Location: Block Model
Keyboard Command: bestpit
Prerequisite: Value Block Model (.bm file)