| 近距离煤层煤柱下应力分布和巷道支护技术 |
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| 引用本文： | 王利军,王升.近距离煤层煤柱下应力分布和巷道支护技术[J].江西煤炭科技,2020(1):149-152. |
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| 作者姓名： | 王利军 王升 |
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| 作者单位： | 山西煤炭运销集团忻州有限公司,山西 忻州 034000;江西煤矿安全监察局安全技术中心,江西 南昌 330096 |
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| 摘 要： | 针对和尚嘴煤业近距离煤层煤柱下掘进巷道变形大的问题,在介绍地质力学特征的基础上,采用数值模拟分析上部煤层不同方式采动后,采空区和煤柱在下部煤层的应力分布情况。分析煤柱下巷道变形特点和支护要点,结合高预应力强力锚杆支护理论,提出合理的锚网与锚索联合支护设计,现场试验效果明显。
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| 关 键 词： | 近距离煤层 煤柱下 应力分布 高预应力 锚网与锚索联合支护 |
Stress distribution under near coal seam pillar and roadway support technology |
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| Wang Lijun,Wang Sheng.Stress distribution under near coal seam pillar and roadway support technology[J].Jiangxi Coal Science & Technology,2020(1):149-152. |
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| Authors: | Wang Lijun Wang Sheng |
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| Affiliation: | (Shanxi coal transport&marketing group xinzhou co.,Ltd.,xinzhou 034000,China;Safety technology center of jiangxi administration of coal mine safety,nanchang 330096,China) |
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| Abstract: | Aiming at the problem of large deformation of roadway under coal pillar in the near coal seam of shanzui coal industry,based on the introduction of geomechanics characteristics,the stress distribution of goaf and coal pillar in the lower coal seam after different mining methods in the upper coal seam is analyzed by numerical simulation.Based on the analysis of deformation characteristics and supporting points of roadway under coal pillar and the theory of high-prestressed strong bolt support,a reasonable joint support design of anchor net and anchor cable is put forward. |
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| Keywords: | close seam under coal pillar stress distribution high prestress anchor net and cable support |
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