A new classification system for evaluation and prediction of unplanned dilution in cut-and-fill stoping method | ||
| Journal of Mining and Environment | ||
| مقاله 8، دوره 9، شماره 4، دی 2018، صفحه 873-892 اصل مقاله (1.35 M) | ||
| نوع مقاله: Case Study | ||
| شناسه دیجیتال (DOI): 10.22044/jme.2018.6483.1468 | ||
| نویسندگان | ||
| M. Mohseni؛ M. Ataei* ؛ R. Khaloo Kakaie | ||
| Faculty of Mining, Petroleum & Geophysics Engineering, Shahrood University of Technology, Shahrood, Iran | ||
| چکیده | ||
| Production planning in mineral exploitation should be undertaken to maximize exploited ore at a minimum unplanned dilution. Unplanned dilution reduction is among the ways to enhance the quality of products, and hence, reduce the associated costs, resulting in a higher profit. In this way, firstly, all the parameters contributing to unplanned dilution in underground stopes and specifically the cut-and-fill stoping method are identified. Secondly, the parameters are weighed using the fuzzy-Delphi analytical hierarchy process. Thirdly, the most effective parameters are selected among the pool of effective parameters. Finally, in order to present a novel classification system for an unplanned dilution assessment, a new index called stope unplanned dilution index (SUDI) is introduced. SUDI represents the extent to which a cut-and-fill stope is susceptible to unplanned dilution. That is, having the value of this index, one may classify the cut-and-fill stopes into five groups according to robustness versus unplanned dilution: very strong, strong, moderate, weak, and very weak. SUDI is applied to10 stopes in different parts of Venarch Manganese Mines (Qom, Iran). In this way, a semi-automatic cavity monitoring system is implemented in the stopes. The regression analysis method shows that there is a relationship between SUDI and the actual unplanned dilution in equivalent linear overbreak/slough with a correlation coefficient (R2 = 0.8957). | ||
| کلیدواژهها | ||
| Underground Mining؛ Cut-and-Fill Method؛ Unplanned Dilution؛ Classification System؛ Stope Unplanned Dilution Index | ||
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