Economic Analysis Of Unplanned Dilution In Venarch Manganese Underground Stopes

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MOHSENI MAJID; ATAEI MOHAMMAD; Kakaie Reza

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Paper Information

Journal: IRANIAN JOURNAL OF MINING ENGINEERING (IRJME) Year:2019 | Volume:13 | Issue:41 Page(s): 56-74

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Title

Economic Analysis Of Unplanned Dilution In Venarch Manganese Underground Stopes

Author(s)

MOHSENI MAJID | ATAEI MOHAMMAD | Kakaie Reza | Issue Writer Certificate

Keywords

Underground stopeQ1

cavity monitoring systemQ1

unplanned dilutionQ1

economic analysisQ1

Abstract

: In Underground stopes, unplanned dilution occurs due to the over-break and slough of walls and roof, consequently mixing the ore with wastes. This phenomenon not only leads to a reduction in the grade, but also imposes some costs due to the grade deficit, and wastes money and energy for extraction of wastes. Hence, measuring the over-break and slough of roof and walls of the stopes is considered critical in underground mining, in order to determine the unplanned dilution and the study of its economic side-effects. In this paper, the effects of unplanned dilution on grade reduction, mining costs increase, and profit reduction was investigated using the cavity monitoring system (CMS). The system was implemented on 24 stopes of Venarch manganese mines, defining the linear equivalent of over-break and slough (ELOS) for the dilution, which led to understand the relations between the over-break and dilution parameters and the economic parameters, including the equation for predicting the loss of profit. Results of data analysis indicated that the break-even of the over-break was 2. 18 m that caused a dilution of 67. 38%; any further over-break will be loss-making.

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APA: Copy

MOHSENI, MAJID, ATAEI, MOHAMMAD, & Kakaie, Reza. (2019). Economic Analysis Of Unplanned Dilution In Venarch Manganese Underground Stopes. IRANIAN JOURNAL OF MINING ENGINEERING (IRJME), 13(41 ), 56-74. SID. https://sid.ir/paper/117062/en

Vancouver: Copy

MOHSENI MAJID, ATAEI MOHAMMAD, Kakaie Reza. Economic Analysis Of Unplanned Dilution In Venarch Manganese Underground Stopes. IRANIAN JOURNAL OF MINING ENGINEERING (IRJME)[Internet]. 2019;13(41 ):56-74. Available from: https://sid.ir/paper/117062/en

IEEE: Copy

MAJID MOHSENI, MOHAMMAD ATAEI, and Reza Kakaie, “Economic Analysis Of Unplanned Dilution In Venarch Manganese Underground Stopes,” IRANIAN JOURNAL OF MINING ENGINEERING (IRJME), vol. 13, no. 41 , pp. 56–74, 2019, [Online]. Available: https://sid.ir/paper/117062/en

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