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作 者:陈敏 Chen Min(Hongdong Yilong Coal Co.,Ltd.,Hozhou Coal and Electricity Group,Linfen,Shanxi 041600)
机构地区:[1]霍州煤电集团洪洞亿隆煤业有限责任公司,山西临汾041600
出 处:《江西煤炭科技》2020年第3期150-153,共4页Jiangxi Coal Science & Technology
摘 要:为解决亿隆煤业采掘接替紧张的问题,设计在1-102工作面采用留小煤柱沿空掘巷技术,且在1-101工作面回采期间进行沿空巷道的掘进,采用理论分析、数值模拟等方法,确定合理的护巷煤柱宽度为5.0 m,距临近工作面+48^-105 m范围内为采动影响剧烈区段,据此设计沿空巷道的掘进时机和加固范围,现场应用后矿压监测结果表明,掘巷期间顶底板相对移近量为0.341 m,两帮移近量为0.265 m,围岩位移量在合理范围内。Aiming at the problem of tight mining replacement in Yilong Coal Industry,the author designs the technology of gob-side entry driving with small coal pillars at 1-102 working face,and determines that the reasonable width of coal pillars for roadway protection is 5.0 m,and within the range of+48^-105 m from the adjacent working face is the section with severe mining influence based on theoretical analysis and numerical simulation.Results of mine pressure monitoring after field application show that the relative convergence of roof and floor during tunneling is 0.341 m,the convergence of the two sides is 0.265 m,and the displacement of surrounding rock is within a reasonable range.
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