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Gold Science and Technology >

2023 , Vol. 31 >Issue 4: 669 - 679

DOI: https://doi.org/10.11872/j.issn.1005-2518.2023.04.023

Mining Technology and Mine Management

Optimization Model of Underground Stope Working Plan Based on Heuristic Genetic Algorithm

  • Shuang HUANG , 1 ,
  • Mingtao JIA 1 ,
  • Fang LU , 2
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  • 1. School of Resources and Safety Engineering, Central South University, Changsha 410083, Hunan, China
  • 2. Department of Business, Hunan Women’s University, Changsha 410004, Hunan, China

Received date: 2023-02-08

  Revised date: 2023-04-27

  Online published: 2023-09-20

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Abstract

With the rapid development of digital economy in the world，how to realize the rapid optimal allocation of underground mine production equipment has become the key to the continuous advancement and in-depth application of digital mine.In view of the characteristics of underground mines such as limited space，limited equipment resources，and large production tasks，an optimization model was constructed for production planning of the follow-up filling mining method in the open pit using pre-controlled roof medium-and deep-hole and sublevel open-stopping and subsequent filling method.The model aims at minimizing the interval time between adjacent processes and the total production time，and the above issue is solved using genetic algorithms.The genetic algorithms used for solving the problem include traditional genetic algorithms and optimized genetic algorithms.Taking the actual data of a copper mine test stope in Zambia as an example，it can be seen from the iterative results that all genetic algorithms can solve the model，and the optimized genetic algorithm converges faster than the ordinary genetic algorithm.The genetic algorithm accelerated by heuristic algorithm has the fastest convergence speed.Therefore，the heuristic genetic algorithm is used to solve the multi-objective optimization model and the results are visualized.After analyzing the solution results，it is found that the average utilization rate of equipment is only 49.16%，and the utilization rate of some equipment is low，so the number of equipment is optimized.After the number of equipment was optimized and solved again，the average utilization rate of mine equipment increased to 64.8%，basically meeting the requirements of the mine.In terms of production，the daily average ore output is 3 631.19 t/d，which meets the mining demand and effectively shorts the operation time interval to ensure the requirements of mining safety.In addition，copper and cobalt sunrise ore grade fluctuation is small，easy to concentrate.Therefore，the algorithm and model can quickly and effectively solve the problem of multi-equipment coordination in a copper mine in Zambia，improve production efficiency and safe mining.

Key words： underground metal mines; sublevel open-stoping method; subsequent filling; multi-objective optimization model; heuristic algorithm; fenetic algorithm; equipment optimization

Cite this article

Shuang HUANG , Mingtao JIA , Fang LU . Optimization Model of Underground Stope Working Plan Based on Heuristic Genetic Algorithm[J]. Gold Science and Technology, 2023 , 31(4) : 669 -679 . DOI: 10.11872/j.issn.1005-2518.2023.04.023

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http://www.goldsci.ac.cn/article/2023/1005-2518/1005-2518-2023-31-4-669.shtml

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