| 1201-2回风顺槽采空区下合理错距及围岩控制技术研究 |
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| 引用本文： | 王帅.1201-2回风顺槽采空区下合理错距及围岩控制技术研究[J].山东煤炭科技,2022(2). |
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| 作者姓名： | 王帅 |
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| 作者单位： | 山西汾西瑞泰正中煤业有限公司 |
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| 摘 要： | 为保障近距离煤层采空区下1201-2回风顺槽围岩的稳定,基于巷道赋存情况,采用FLAC3D数值模拟软件进行巷道与上覆采空区合理错距的分析,通过对比分析不同错距下围岩应力和塑性区发育,确定合理错距为20 m。结合数值模拟结果及巷道地质条件,设计巷道采用注浆短锚索+锚杆支护方案,并进行围岩变形量的观测分析。结果表明,巷道掘进期间围岩变形量小,围岩处于稳定状态。
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| 关 键 词： | 近距离 煤巷 错距 支护 |
Study on Reasonable Staggered Distance and Surrounding Rock Control Technology under the 1201-2Return Air Groove Goaf |
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| Wang Shuai.Study on Reasonable Staggered Distance and Surrounding Rock Control Technology under the 1201-2Return Air Groove Goaf[J].Shandong Coal Science and Technology,2022(2). |
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| Authors: | Wang Shuai |
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| Affiliation: | (Shanxi Fenxi Ruitai Zhengzhong Coal Industry Co.,Ltd.,Shanxi Lingshi 031308) |
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| Abstract: | In order to ensure the stability of surrounding rock of the 1201-2return air in short distance coal seam goaf,based on the occurrence of roadway,FLAC3Dnumerical simulation software is used to analyze the reasonable dislocation distance between roadway and overlying goaf.Through comparative analysis of surrounding rock stress and plastic zone development under different dislocation distance,the reasonable fault distance is determined to be 20 m.Combined with numerical simulation results and roadway geological conditions,the roadway is designed with grouting short anchor cable + anchor rod support scheme,and the deformation of surrounding rock is observed and analyzed.The results show that the deformation of surrounding rock is small during roadway excavation and the surrounding rock is in a stable state. |
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| Keywords: | close range coal roadway staggered distance support |
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