摘要
以李家庄煤矿5号煤近距离煤层群复杂应力分布下回采巷道的位置选择为背景,通过数值模拟试验,对采空区下近距离下煤层回采巷道距离遗留煤柱边缘0 m(煤柱正下方)、8 m、18 m、25 m等4种情况下巷道的围岩变形量、垂直应力分布及水平应力分布等进行分析,确定了合理的巷道位置为距离上煤层遗留煤柱边缘25 m处。
The site selection of Lijiazhuang coal mine No. 5 coal mining roadway in the close distance coal seam group complex stress distribution is as background. Through numerical simulation experiment, the surrounding rock deformation of the roadway, vertical stress distribution, horizontal stress distribution and other in four conditions of which under goaf close distance lower coal seam mining roadway is 0 m, 8 m, 18 m, 25 m distance from the edge of remnant pillar are analyzed, determines that the reasonable location of roadway is 25 m distance from the remnant pillar edge of upper coal seam.
出处
《山西焦煤科技》
2014年第8期17-19,24,共4页
Shanxi Coking Coal Science & Technology
关键词
采空区
近距离煤层
回采巷道
巷道位置
Goaf
Close distance coal seams
Mining roadway
Roadway position
