|تعداد مشاهده مقاله||103,298,194|
|تعداد دریافت فایل اصل مقاله||81,353,256|
A non-monetary valuation system for open-pit mine design
|International Journal of Mining and Geo-Engineering|
|مقاله 7، دوره 54، شماره 2، اسفند 2020، صفحه 135-145 اصل مقاله (837.01 K)|
|نوع مقاله: Research Paper|
|شناسه دیجیتال (DOI): 10.22059/ijmge.2019.262989.594752|
|Meisam Saleki 1؛ Reza Khalo Kakaei2؛ Mohammad Ataei 3|
|1Department of Mining Eng, Geophysics and Petroleum, Shahrood University of Technology|
|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.|
|Open pit design؛ Ultimate pit؛ Non-monetary value؛ Optimization؛ Heuristic algorithm|
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