摘要
为解决近距离煤层采空区下和上区段工作面动压双重因素影响下的煤层回采巷道布置问题,以小纪汗矿29205工作面为工程背景,在巷道围岩地质力学测试的基础上,运用FLAC数值模拟软件对29205正巷不同布置方式下围岩应力分布和塑性破坏特征进行研究,并结合围岩控制方面提出合理的支护措施,确定最佳巷道布置方式。研究结果表明:综合考虑各因素,29205正巷采用内错距离为中对中7m煤柱,实体煤柱为3m的布置方式,布置于8#煤采空区下方。
In order to solve the problem of roadway layout under the influence of dynamic pressure in the lower and upper working faces of short-distance coal seam,taking Xiaoji Khan mine 29205 working face as the engineering background,based on the geological mechanics test of roadway surrounding rock,FLAC numerical simulation software is used to simulate the surrounding rock under the different layout of 29205 main roadway.Force distribution and plastic failure characteristics are studied,and reasonable supporting measures are put forward in combination with surrounding rock control to determine the optimal roadway layout.The results show that,taking into account all factors,29205 main roadway adopts the layout mode of 7 m pillar with middle dislocation distance and 3 m pillar with solid pillar,which is arranged below the goaf of No.8 coal mine.
作者
李世勇
LI Shiyong(Shaanxi Huadian Yuheng Coal and Electricity Co.,Ltd.,Yulin 719000,China)
出处
《煤矿现代化》
2020年第4期11-14,17,共5页
Coal Mine Modernization
关键词
近距离煤层
采空区下
动压
回采巷道
close seam
under goaf
dynamic pressure
mining roadway
