Optimization and sensitivity analysis of mineable economic volumes have been standard practise for open pits for many years now, and more recently software has become available to apply techniques for delineating mineable reserves for underground mines. In general these techniques have been applied to a single resource model to quantify mineable tonnes and grade for underground mining. However by using multiple conditionally simulated models both the risk associated with the mining parameters and the risk associated with variations in grade, tonnes and profit can be quantified. Using suitable software the mine planner can then easily and quickly define and compare alternative designs to assess and improve the robustness of and the confidence in the final design.
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