辛置煤矿2-104综放工作面合理留设煤柱尺寸研究

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英文篇名：Research on reasonable coal pillar size in fully mechanized top coal caving face 作者：姚建伟 英文作者：YAO Jianwei;Shanxi Coking Coal Huozhou Coal Group Xinzhi Coal Mine; 关键词：煤柱 ; 稳定性 ; 合理尺寸 ; 应力规律 英文关键词：coal pillar;;stability;;reasonable size;;stress law 中文刊名：MKXD 英文刊名：Coal Mine Modernization 机构：山西焦煤霍州煤电集团辛置煤矿; 出版日期：2019-06-05 出版单位：煤矿现代化 年：2019 期：No.151 语种：中文; 页：MKXD201904012 页数：3 CN：04 ISSN：37-1205/TD 分类号：37-39

摘要

以辛置煤矿2-104工作面为研究对象,分析了煤柱稳定性主要受地质条件和煤柱宽高比影响,并分析了煤柱破坏形式。通过理论分析了煤柱应力呈现由边缘向深部先增大后减小最后趋于稳定的规律,并通过计算得出了该工作面合理留设煤柱尺寸为27m。采用FLAC2D模拟软件得出了煤柱Y方向应力分布云图和位移曲线图,验证了煤柱应力分布规律和合理尺寸。
        Taking the 2-104 working face of Tenghui Coal Industry as the research object, this paper analyzes that the stability of coal pillar is mainly affected by geological conditions and the ratio of width to height of coal pillar, and analyzes the failure mode of coal pillar. Through theoretical analysis, the stress of coal pillar increases first, then decreases and finally tends to be stable from the edge to the depth, and the reasonable size of coal pillar is 27 M. The Y-direction stress distribution nephogram and displacement curve of coal pillar are obtained by FLAC2 D simulation software, and the stress distribution law and reasonable size of coal pillar are verified.

引文

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