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针对孤岛工作面的回采巷道留设大煤柱造成煤炭资源的损失,且较宽的区段煤柱在工作面回采后形成应力集中,影响邻近煤层的开采和底板巷道的稳定的问题.以城郊煤矿2107孤岛工作面回采巷道沿空掘巷为工程背景,采用UDEC数值模拟软件对2107工作面回采巷道不同宽度条件下的围岩稳定进行了分析研究,结果表明:当区段煤柱宽度为4m时,巷道围岩控制能满足工作面安全生产的需要.
Large pillar left in the mining gateway of island face causes the loss of coal resources, and the wide section of coal pillar forms stress concentration after mining face, affecting the mining of adjacent coal seams and the stability of floor roadway. 2105 working face of coal mine tunneling along the goaf as the engineering background, the UDEC numerical simulation software was used to analyze the surrounding rock stability under the condition of different width of the 2107 working face. The results show that: when the section pillar width is 4m When the tunnel surrounding rock control to meet the needs of safe production of the face.