Scholarly record
LONG TERM PRODUCTION SCHEDULING OF OPEN PIT MINES, A REVIEW OF OLD AND NEW ALGORITHMS
Abstract
Since long term production scheduling deals with movement of ore and waste during the life of a mine, it has a significant effect on the cash flow of a mining operation. Therefore, mine planners often seek to optimize the production schedule with respect to a given criterion. The most commonly used criterion in long term scheduling optimization is to maximize net present value (NPV). The process involves sequencing of ore blocks or parcels to be mined in each period over the life of the mine subject to precedence and other physical constraints imposed by the mining system. According to literatures there are many production planning algorithms, both heuristic and rigorous, which lead to near optimum solution. Operation research based techniques can find optimum solution but number of their binary variables is too many to solve without simplification. In this paper, production planning problem in hard-rock open pit mining is presented and some of old and new techniques have been reviewed.
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References15
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