| 破碎顶板煤巷支护参数优化及工程实践 |
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| 引用本文： | 徐青云,黄庆国,刘学文.破碎顶板煤巷支护参数优化及工程实践[J].煤炭科学技术,2012,40(6):22-25. |
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| 作者姓名： | 徐青云 黄庆国 刘学文 |
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| 作者单位： | 1. 山西大同大学煤炭工程学院,山西大同,037003
2. 山西晋神沙坪煤业有限公司,山西忻州,036500 |
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| 摘 要： | 为解决沙坪煤矿破碎顶板煤巷支护困难的问题,通过测试该矿顶底板煤岩层物理力学性质,采用FLAC3D数值模拟软件分析了不同支护条件下巷道围岩的变形特征。结果表明：当锚索长度为8 000 mm时,巷道的顶板下沉量较小,满足工程实际要求。采用锚杆＋锚索＋钢筋网联合支护方案后,巷道围岩力学状况得到显著改善,使巷道掘进速度提高了20%
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| 关 键 词： | 破碎顶板 煤巷支护 围岩变形 巷道掘进 |
Optimization and Engineering Practices on Support Parameters of Seam Gateway with Broken Roof |
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| XU Qing-yun,HUANG Qing-guo,LIU Xue-wen.Optimization and Engineering Practices on Support Parameters of Seam Gateway with Broken Roof[J].Coal Science and Technology,2012,40(6):22-25. |
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| Authors: | XU Qing-yun HUANG Qing-guo LIU Xue-wen |
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| Affiliation: | 1.School of Coal Engineering,Shanxi Datong University,Datong 037003,China;2.Shanxi Jinshen Shaping Coal Mining Company Ltd.,Xinzhou 036500,China) |
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| Abstract: | In order to solve the difficult support problem of the seam gateway with broken roof in Shaping Mine,with the measurement and test of the physical and mechanical properties of the coal and rock in the seam roof and floor,the FLAC3Dnumerical simulation software was applied to analyze the deformation features of the gateway surrounding rock under the different support conditions.The results showed that when the length of the anchor was 8 000 mm,the subsidence of the gateway roof would be small and could meet the actual requirements of the project.When the combined support plan with the bolt + anchor + reinforced bar mesh was applied,the mechanics status of the gateway surrounding rock was remarkably improved and the driving speed of the gateway was increased by 20%. |
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| Keywords: | broken roof support of seam gateway surrounding rock deformation gateway driving |
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