强流变突出厚煤层沿顶掘进与支护技术研究  

Research on Technology of Driving along Roof and Supporting in Strong Rheological and Thick Outburst Coal Seam

作　　者：李长兴 辛程鹏 LI Changxing;XIN Chengpeng(College of Mining Engineering,Guizhou University of Engineering Science,Bijie 551700,China;School of Emergency Management and Safety Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China)

机构地区：[1]贵州工程应用技术学院矿业工程学院,贵州毕节551700 [2]中国矿业大学(北京)应急管理与安全工程学院,北京100083

出　　处：《煤炭技术》2025年第3期129-134,共6页Coal Technology

基　　金：贵州省教育厅青年科技人才成长项目(黔教合KY字[2022]122号);毕节市科技局联合基金(毕科联合[2023]32号);贵州省科技厅科技计划项目(黔科合基础-ZK[2023]一般124)。

摘　　要：针对大淑村煤矿掘进速度慢、瓦斯涌出量大、突出危险性高等问题,提出了强流变突出厚煤层沿顶掘进的巷道布置和支护工艺。利用FLAC3D模拟软件对巷道应力分布和变形特征进行了数值模拟分析,论证了沿顶掘进在强流变突出厚煤层中的可行性。从掘进面瓦斯涌出量突出危险性及支护工艺等方面,对沿顶掘进和沿底掘进2种工艺进行技术经济对比,结果表明,沿顶掘进瓦斯涌出量明显低于沿底掘进。实践表明,沿顶掘进解决了沿底掘进时顶板为软煤层的支护问题及顶部煤层卸压后瓦斯大量涌出问题,掘进速度由原来的2~3 m/d增加到10~15 m/d,创造了该矿掘进工作面进尺最大456 m/月的记录,极大地提高了工作效率。Aiming at the problems of slow driving speed,large gas emission and high outburst risk in Dashucun mine,the roadway layout and supporting technology of driving along the roof in strong rheological and thick outburst coal seam were put forward.The stress distribution and deformation characteristics of the roadway were numerically simulated and analyzed by using FLAC3D simulation software,and the feasibility of driving along the roof in strong rheological and thick outburst coal seam was demonstrated.From the aspects of gas emission,outburst risk and support technology of heading face,the technical and economic comparison between driving along the roof and driving along the bottomwas carried out.The results showed that the gas emission of driving along the roof was significantly lower than that of driving along the bottom.The practice showed that the technology of driving along the roof had solved the supporting problem of soft coal seam when driving along the bottom and the problem of large amount of gas emission after pressure relief of the top coal seam.The driving speed is increased from 2-3 m/d to 10-15 m/d,creating the record of the maximum monthly footage of 456 m in the excavation face of the coal mine,which greatly improves the work efficiency.

关 键 词：沿顶掘进 厚煤层 支护技术 应力分布 强流变 

分 类 号：TD823[矿业工程—煤矿开采] TD353[矿业工程—矿山开采]