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A non-monetary valuation system for open-pit mine design

مجله بین المللی معدن و مهندسی زمین، دوره: 54، شماره: 2
Year: 1399
COI: JR_IJMGE-54-2_007
Language: EnglishView: 195
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Meisam Saleki - Department of Mining Eng, Geophysics and Petroleum, Shahrood University of Technology
Reza Khalo Kakaei - shahrood
Mohammad Ataei - third author


In open-pit mining, different designs are created, such as optimal ultimate pit limit and production planning. In order to determine the ultimate pit limit, two approaches are generally used based on geological and economic block models. In this paper, according to the long-term trend of metals price and mining costs, some suggestions were made to design the ultimate pit limit using the geological block model. In addition, a grade-based objective function was presented for determining the ultimate pit limit. Then, in order to solve the problem, a heuristic algorithm was developed to simultaneously determine the ultimate pit limit and the sequence of block mining. For a 2D geological block model, the final pit was generated using the proposed algorithm. Furthermore, to validate the generated pit limit, the results of a 3D geological block model were compared with those of the Lerchs-Grossman algorithm. The comparison showed that the two pits corresponded to each other with an accuracy value of 97.7 percent.


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Saleki, Meisam and Khalo Kakaei, Reza and Ataei, Mohammad,1399,A non-monetary valuation system for open-pit mine design,

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