IJE TRANSACTIONS C: Aspects Vol. 27, No. 9 (September 2014) 1475-1484    Article Under Proof

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M. Rahmanpour, M. Osanloo, N. Adibee and M. AkbarpourShirazi
( Received: December 30, 2013 – Accepted: May 22, 2014 )

Abstract    Transportation costs are a significant part of capital and operating costs of large open pit mines. Cost efficiency and high reliability of in pit crushing and conveying systems compared to conventional truck-shovel system makes it more appealing to be utilized in modern mining activities. In this paper the suitable location of an in pit crusher is investigated as a single hub location problem. In selecting the optimum location, two factors are considered. First, the overall haulage cost is minimized, and second, the location is chosen such that it is not located inside the mining area, and crusher site is fixed through a period of at least one year. Application of single hub problem is quite effective in determining the location of the in pit crusher. The method is applied in Sarcheshmeh copper mine, to determine the optimum location of the in pit crushing and conveying system.


Keywords    Open Pit Mining, In Pit Crushing and Conveying, Hub Location Problem


چکیده    هزينه حمل ونقل، مهمترين بخش از هزينه‌های سرمايه‌ای و عملياتی معادن روباز بزرگ را تشکيل می‌دهد. با توجه به روند افزايشی ميزان توليد معادن روباز و نيز عميق‌تر شدن اين معادن، پيش‌بينی مي‌شود استفاده از سيستم سنگ‌شکن درون پيت و حمل مواد با نوار نقاله به عنوان يکی از روش‌های حمل و نقل در معادن روباز گسترش يابد. با توجه به اينکه اين سيستم در قياس با سيستم متداول شاول و کاميون، کم هزينه‌تر بوده و دارای قابليت اطمينان بالاتری است، از اين روی مورد توجه معدن‌کاران نيز قرار گرفته است. در اين مقاله نحوه تعيين موقعيت مناسب برای استقرار سيستم سنگ‌شکن درون پيت به صورت يک مساله هاب مدل‌سازی شده است. در تعيين موقعيت بهينه سنگ‌شکن درون پيت، دو عامل اصلی مورد توجه قرار گرفته است. اول اينکه، کل هزينه حمل که تابعی از طول مسير است به حداقل برسد، و دوم اينکه موقعيت انتخاب شده برای استقرار سنگ‌شکن در داخل محدوده استخراجی قرار نداشته باشد و موقعيت سنگ‌شکن برای يک بازه حداقل يک ساله تغيير نکند. اين روش برای تعيين محل استقرار سيستم سنگ‌شکن درون پيت در معدن مس سرچشمه مورد بررسی قرار گرفته است



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