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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >Fully mechanized longwall mining with two shearers: A case study
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Fully mechanized longwall mining with two shearers: A case study

机译：用两种剪切者齐全机械化的Longwall采矿：一个案例研究

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摘要

To reduce production costs and increase efficiency in ageing coal mines, a system that utilizes two shearers in a fully mechanized longwall working face is proposed. Using theoretical and engineering experience, three issues pertaining to the system were determined: (a) the two-shearer mining technique; (b) matching and modifying the equipment; (c) and coal-cutting task allocation for each shearer. Two mining processes are proposed, with the two shearers travelling in either the same or opposing directions. To avoid breakage of chains and pan extrusion of the armoured face conveyor (AFC), the length of the AFC 'snake' was controlled. To ensure continuous cutting and transporting of coal, the cross-sectional dimensions of the AFC were checked and the shearer closer to the head drive was modified. Based on the assumption of equal cutting times for each shearer, the meeting position of the two shearers was obtained by using a theoretical model of mining task allocation. Application of this technique at No. 2 lining Mine, China, has shown remarkable benefits; daily production capacity was increased by 54% and personnel efficiency was improved by 33 t/d per person.
机译：为降低生产成本并提高老化煤矿效率，提出了一种在综合机械化的Longwall工作面上使用两种剪切刀的系统。利用理论和工程经验，确定了有关该系统的三个问题：（a）双剪切式挖掘技术; （b）匹配和修改设备; （c）和每个采煤机的煤炭切割任务分配。提出了两种采矿过程，两个剪切者以相同或相反的方向行进。为避免破损的链条和锅挤出装甲面输送机（AFC），控制AFC'Snake'的长度。为了确保煤的连续切割和运输，检查AFC的横截面尺寸，修改了靠近头部驱动器的剪切刀。基于每个采煤机的相等切割时间的假设，通过使用挖掘任务分配的理论模型获得两种剪切刀的会议位置。这种技术在中国2号衬里矿的应用表现出显着的益处;每日生产能力提高54％，人员效率得到33吨/平方米。

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  • 作者

    Y. Yuan; H. Liu; S. Tu;

  • 作者单位

    Key Laboratory of Deep Coal Resource Mining Ministry of Education of China School of Mines State Key Laboratory of Coal Resources and Safe Mining China University of Mining and Technology China.;

    Key Laboratory of Deep Coal Resource Mining Ministry of Education of China School of Mines State Key Laboratory of Coal Resources and Safe Mining China University of Mining and Technology China.;

    Key Laboratory of Deep Coal Resource Mining Ministry of Education of China School of Mines State Key Laboratory of Coal Resources and Safe Mining China University of Mining and Technology China.;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 矿业工程;
  • 关键词

    super-long working face; two shearers; AFC'snake' length; shearer modification; coal-cutting task allocation.;

    机译：超长的工作面;两种剪切刀;AFC的人的长度;剪切器改造;煤炭切割任务分配。;

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