A Two-Phase Simulation-Based Optimization of Hauling System in Open-Pit Mine

Document Type: Research Paper

Authors

1 Department of Industrial Engineering, Lahijan Branch, Islamic Azad University, Lahijan, Iran

2 Department of Mathematics, Lahijan Branch, Islamic Azad University, Lahijan, Iran

Abstract

One of the key issues in mining is the hauling system. Truck and shovels are the most widely used transportation equipment in mines. In this paper, a two-phase simulation-based optimization is presented to maximize utilization of hauling system in the largest Iranian open-pit copper mine. In the first phase, The OptQuest for Arena software package was used to solve the optimization problem to provide an optimal production quantity. In the second phase, the haulage system problem in the open-pit was modeled by bi-objective optimization programing by means of meta-modeling approach. Meta-modeling approach could estimate the exact total production quantities, and solved the problem by determining the optimal value of shovels using the design of experiments. The efficient solution of the bi-objective problem was obtained using -constraint method. The results of the proposed approach were compared with the current situation, where the total production had increased by 21% (equivalent to 10K tons) through the proposed approach. Therefore, calculations in this mine show that how the proposed framework can improve the production and productivity of haulage system.

Keywords

Main Subjects


Article Title [Persian]

بهینه سازی دوفازی مبتنی بر شبیه سازی سیستم حمل و نقل در معدن روباز

Authors [Persian]

  • میلاد ابوالقاسمیان 1
  • آرمین قانع کنفی 2
  • مریم دانشمندمهر 1
1 گروه مهندسی صنایع، واحد لاهیجان، دانشگاه آزاد اسلامی، لاهیجان، ایران
2 گروه ریاضی، واحد لاهیجان، دانشگاه آزاد اسلامی، لاهیجان، ایران
Abstract [Persian]

سیستم حمل‌و‌نقل در معدن یک فعالیت مهم است. کامیون و شاول‌ها از پرکاربردترین تجهیزات در معادن هستند. در این مقاله، یک بهینه‌سازی دوفازی مبتنی بر شبیه‌سازی برای بیشینه نمودن بهره‌برداری از سیستم حمل‌و‌نقل در بزرگترین معدن روباز مس ایران ارائه شده است. در فاز نخست، از OptQuest بسته نرم افزاری Arena به منظور حل مسأله بهینه‌سازی جهت دستیابی به یک تولید بهینه استفاده شده است. در فاز دوم، مسأله سیستم حمل‌ونقل معدن روباز فرموله شده به وسیله مسأله بهینه‌سازی دوهدفه با استفاده از روش متامدل حل شده است. روش متامدل، قادر به تخمین مقادیر کل تولید می‌باشد و با بهره‌گیری از طرح آزمایش، مقادیر بهینه شاول‌ها را به دست می آورد. روش ε-محدودیت به منظور یافتن جواب‌های کارای مسأله بهینه‌سازی دوهدفه مورد استفاده قرار می گیرد. سپس نتیجه روش پیشنهادی با وضعیت فعلی سیستم مقایسه می‌گردد. کل تولید به کمک روش پیشنهادی به اندازه 21% و معادل با 10 کیلوتن افزایش می‌یابد. محاسبات انجام شده نشان می دهد که چگونه چارچوب پیشنهاد شده موجب بهبود تولید و بهره وری سیستم حمل و نقل می شود.

Keywords [Persian]

  • بهینه سازی مبتنی بر شبیه سازی
  • متا-مدل
  • طرح آزمایش
  • بهینه سازی چندهدفه
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