近距离煤层群采动后底板应力分布及回采巷道布置
化秀峰
（山西介休义棠倡源煤业有限公司，山西 介休 032000）
摘要： 在开采煤层群时，经常采用下行式开采方式。下行式开采时，上层煤开采遗留煤柱会对下层煤的回采巷道产
生影响，为此需要研究上层煤开采后底板的应力分布情况。采用滑移线场理论分析了下煤层回采巷道布置的关键参数，
结合A矿的实际情况探讨了近距离煤层群开采时的巷道布置方式。通过对A 矿的数值模拟发现，下煤层开采时回采巷道
与上煤层开采时遗留的煤柱错距应保持在20耀25 m。
关键词： 煤矿开采；近距离煤层群；底板应力；回采巷道布置
中图分类号： TD322.1；TD822⁺.2     文献标识码： A     文章编号： 2095-0802-(2022)04-0015-03
Floor Stress Distribution and Mining Roadway Layout of Close-range Coal Seam Group
after Mining
HUA Xiufeng
(Jiexiu Yitang Changyuan Coal Industry Co., Ltd. of Shanxi, Jiexiu 032000, Shanxi, China)
Abstract: Downward mining is often used in coal seam group mining. During downward mining, the coal pillars left by the upper
coal seam mining will affect the mining roadway of the lower coal seam. Therefore, it is necessary to study the floor stress
distribution after the upper coal seam mining. This paper analyzed the key parameters of the roadway layout in the lower coal
seam mining by using the slip line field theory, and discussed the roadway layout method in the close-range coal seam group
mining in combination with the actual situation of A Mine. It was found in the numerical simulation of A Mine that the dislocation
distance between the mining roadway and the coal pillar left during the mining of the upper coal seam should be kept at 20-25 m.

Key words: coal mining; close-range coal seam group; floor stress; mining roadway layout