تعیین عیار‌حد معادن سنگ آهن با در نظر گرفتن هزینه‌های توسعه پایدار

نوع مقاله : مقاله پژوهشی

نویسندگان

دانشکده مهندسی معدن، دانشگاه صنعتی امیرکبیر، تهران، ایران

چکیده

عیار‌‌حد یکی از فاکتورهای مهم در طراحی و برنامه‌‌ریزی تولید معادن روباز است. درنظر گرفتن شاخص‌های توسعه‌پایدار در محاسبه عیار‌حد باعث طراحی پایدار معدن می‌شود و بزرگترین فرصت برای کاهش اثرات نامطلوب فعالیت‌های معدنکاری است. تا چندی پیش در محاسبه‌ی عیارحد صرفاً شاخص‌های اقتصادی در نظر گرفته می‌شدند. در پژوهش‌های اخیر شاخص‌های زیست محیطی نیز دخالت داده شد، اما پژوهشی که عوامل اجتماعی را نیز در نظر گرفته باشد گزارش نشده است. از این‌‌رو در مطالعه حاضر، مدل جدیدی برای محاسبه عیار حد ارائه شد که هر سه معیار توسعه پایدار در آن لحاظ شده است. برای انجام تحقیق، هزینه‌های مرتبط با توسعه پایدار در فرمول عیارحد سربه‌‌سری وارد و با داشتن اطلاعات مربوط به معدن سنگ آهن چغارت، روش پیشنهادی اعتبارسنجی شد. نتایج حاصل از تحقیق نشان می‌‌دهد که هزینه‌های توسعه پایدار لحاظ شده در تخمین عیارحد معدن سنگ آهن چغارت تنها 5 درصد از کل هزینه‌ها را تشکیل می‌دهد و نتایج تحلیل حساسیت نیز نشان می‌‌دهد این هزینه‌ها کم‌ترین تأثیر را در تعیین عیارحد دارند. نتایج همچنین نشان می‌‌دهند که تأثیر هزینه‌‌های توسعه پایدار در معدن چغارت باعت افزایش 5/5 درصدی عیارحد شده است و ممکن است تاثیر چندانی در نتایج ناشی از آن نداشته باشد. بنابراین، نتایج حاصل از پیاده‌‌سازی مدل پیشنهادی در تحقیق حاضر نشان می‌‌دهد که با به‌کارگیری این روش نه تنها تغییر زیادی در عیارحد حاصل نشده است، بلکه برخی از مشکلات زیست‌‌محیطی و اجتماعی پروژه نیز با لحاظ کردن هزینه‌‌های توسعه پایدار و صرف کمترین درصد هزینه، مرتفع خواهد شد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Cut-Off Grade Determination of Iron Ore Mines Considering Sustainable Development Costs

نویسندگان [English]

  • Mojtaba Jahani
  • Majid Ataee-pour
  • Zeinab Jahanbani
Department of Mining Engineering, Amirkabir University of Technology, Tehran, Iran
چکیده [English]

Cutoff grade is one of the most important factors in production mine planning and design of open pit mines. Considering the indicators of sustainable development in the calculation of Cutoff grade leads to the sustainable design of the mine and is the biggest opportunity to reduce the adverse effects of mining activities. Until recently, only economic indicators were considered in the calculation of the cutoff grade. In recent studies, environmental indicators have also been implicated, but research that considers social factors has not been reported. Therefore, in the present study, a new model has been developed to calculate the cutoff grade, which includes all three criteria of sustainable development. To carry out the study, the costs related to sustainable development were entered into the break-even cutoff grade formula and the proposed model was validated with the information related to Choghart Iron Ore Mine. The results show that the sustained development costs included in the estimation of the Choghart Iron Ore Mine account for only 5% of the total costs, and the results of the sensitivity analysis show that these costs have the least impact on the determination of cutoff grade. The findings also show that the impact of sustainable development costs in Choghart Mine has increased the percentage of the cutoff grade by 5.5% and may not have much effect on the results. Therefore, the results of the implementation of the proposed model in this research show that by using this method, a big change has not been achieved in the percentage of the cutoff grade. Also, some of the environmental and social problems of the project, taking into account the sustainable development costs, and spending the lowest percentage of the cost will be decreased.

کلیدواژه‌ها [English]

  • Cutoff Grade
  • Sustainable Development
  • Environment
  • Social
  • Choghart Iron Ore Mine

مراجع

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نشریه مهندسی عمران امیرکبیر
دوره 56، شماره 8
1403
صفحه 933-948

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