厚煤层大采高工作面区段煤柱留设及巷道支护技术研究

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英文篇名：Study on coal pillar leaving and roadway supporting technology in thick coal seam with large mining height face 作者：张辉 英文作者：ZHANG Hui;Xishan Coal and Electricity Malan Mine; 关键词：厚煤层 ; 煤柱宽度 ; 松动圈测试 ; 理论计算 ; 数值模拟 ; 高预应力 英文关键词：thick coal seam;;coal pillar width;;loose circle test;;theoretical calculation;;numerical simulation;;High prestress 中文刊名：MKXD 英文刊名：Coal Mine Modernization 机构：西山煤电马兰矿; 出版日期：2019-02-18 出版单位：煤矿现代化 年：2019 期：No.149 语种：中文; 页：MKXD201902076 页数：4 CN：02 ISSN：37-1205/TD 分类号：28-30+33

摘要

针对某矿厚煤层开采时区段煤柱留设宽度较大现状,通过巷道围岩松动圈测试、理论计算的方法初步确定了煤柱宽度,由数值模拟对比了不同煤柱宽度下其塑性区及垂直应分布情况,最终确定合理煤柱尺寸。基于此提出了高预应力锚杆支护方案,有效控制了巷道围岩变形,减小煤柱尺寸并采用合理支护方案可有效增加资源回收率,提高矿井经济效益。
        In view of the thick seam mining, the width of the section pillar is large, the width of coal pillar is determined by test and theoretical calculation method of surrounding rock in roadway, and the plastic zone and vertical distribution under different pillar widths are compared by numerical simulation, finally the reasonable coal pillar size is determined. Based on this, a high prestressed anchor support scheme is put forward, which can effectively control the deformation of surrounding rock of roadway, reduce the size of coal pillar and adopt reasonable supporting scheme to effectively increase the recovery of resources and improve the economic benefit of mine.

引文

[1]黄庆享,杜君武,刘寅超.浅埋煤层群工作面合理区段煤柱留设研究[J].西安科技大学学报,2016,36(01):19-23.
    [2]王临清,厉东伟,吴侃,董继东.煤炭地下开采保护煤柱留设问题研究[J].煤炭工程,2014,46(11):18-20.
    [3]杨仁树,薛华俊,岳中文,李学彬,郝志军,高宗明.曙光煤业大巷保安煤柱留设数值模拟研究[J].煤矿开采,2014,19(04):63-67.
    [4]汪锋,许家林,谢建林,郭杰凯,刘栋林.基于采动应力边界线的顶板巷道保护煤柱留设方法[J].煤炭学报,2013,38(11):1917-1922.
    [5]支光辉,郑彬.我国保护煤柱留设的方法及发展趋势[J].煤炭工程,2009(06):9-11.