0 引言1 工程概况2 工序流程分析3 大冶铁矿设备调度优化模型建立4 设备利用效率分析5采场布置优化6 结论
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武汉科技大学

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Section Continuous Mining StopeWANG Qihu 1,XU Tianchao 1, ZHANG Zenggui2 ,ZHANG Guoquan2,ZHANG Yong2,FENG Qing2
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Wuhan University of Science and Technology

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    摘要:

    大冶铁矿正处于-270 m~-360 m中段接续开采阶段,-270 m中段剩余矿量已不足,-360 m中段投产初期将面临采场生产能力不足,矿山产量不平稳,难以满足年130万 t/a的设计产能。根据上水平分层充填采矿法和分段凿岩阶段出矿空场嗣后充填法的工序特点,基于大冶铁矿-360 m中段各采场分布、回采工序、回采设备现状,建立了采场回采设备调度优化模型,运用遗传算法模拟出最紧凑的工序排布,并基于设备利用率函数求解出最大同时回采采场数,并提出了单中段、两中段两种开采方案。结果表明当-270 m中段可同时回采采场数为3,-360 m中段可同时回采采场数为5时,日产能达到最大值4218 t/d。进一步优化采场布置,结果表明两中段开采方案效率更高,出矿更稳定年生产能力达到143.7万t,综合生产能力超越目标值10.5%,有助于解决大冶铁矿在当前两中段状态下的产能不足问题和产量不稳定问题。

    Abstract:

    Daye Iron Ore is in the continuous mining stage of -270 m~-360 m middle section, the remaining ore volume in the middle section of -270 m is insufficient, and the stope production capacity will be insufficient in the early stage of -360 m middle section, and the mine output is unstable, which is difficult to meet the design capacity of 1.3 million t/a per year. According to the process characteristics of the upper horizontal layered backfill mining method and the subsequent filling method of the empty field in the staged rock drilling stage, based on the distribution of each stope, the mining process and the current situation of the mining equipment in the middle section of Daye Iron Mine -360 m, the stope mining equipment scheduling optimization model was established, the genetic algorithm was used to simulate the most compact process arrangement, and the maximum number of simultaneous stopes was solved based on the equipment utilization function, and two mining schemes were proposed. The results show that when the number of stopes that can be mined at the same time in the middle section of -270 m is 3, and the number of stopes that can be mined at the same time in the middle section of -360 m is 5, the maximum daily production capacity reaches 4218 t/d. Further optimization of stope layout, the results show that the mining scheme of the two middle sections is more efficient, the ore production is more stable, the annual production capacity reaches 1.437 million tons, and the comprehensive production capacity exceeds the target value by 10.5%, which is helpful to solve the problem of insufficient production capacity and unstable production of Daye Iron Mine in the current state of two middle sections.

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  • 收稿日期:2024-03-26
  • 最后修改日期:2024-03-26
  • 录用日期:2024-04-22
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