Abstract
WuTongZhuang No.182309 mining face is an isolated mining face. The abutment pressure is big and roadway deformation is severe due to driving roadway along goaf with short pillar remained. In view of these problems, taking WuTongZhuang No.182309 mining face as project background, the law of the abutment stress distribution was analyzed by use of numerical simulation software FLAC3D and field measurement study. The results showed that the influence scope of the lead abutment pressure was about 55m , the peak value was about 6m ahead of the mining face and the stress concentration factor is 3.3.Based on the above study results, a scheme of advanced support was proposed which effectively controlled the roadway deformation and ensured the safety production of the mining face.
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