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对于厚煤层矿井,上分层不规则回采形成的残留煤柱群及空巷为下分层回采造成了困难,为提高优质煤资源回收率,对于上分层煤柱群下矿压分布规律进行了针对性研究。通过跟踪毛则渠老坑口煤矿7408工作面推进过程中的矿压值,指出该条件下具有高应力分布位置未知和矿压值起伏的特征,结合数值模拟软件得到影响工作面应力分布的因素主要包括:残留煤体的尺寸、空巷尺寸以及下部承载介质的强度,并最终提出了具有针对性的工作面回采建议。
For the thick seam mine, the upper strata of irregular formation of residual coal pillar group and empty lane for the next stratified mining difficulties, in order to improve the recovery rate of high-quality coal resources, stratification for the upper stratified coal pillar group underground pressure distribution Targeted research. By tracking the rock pressure in the process of 7408 working face of the coal mine in Laohangkengkou, Maozeng, it is pointed out that under this condition, the location of high stress distribution is unknown and the pressure value fluctuates. The main factors affecting the stress distribution in working face are obtained by numerical simulation software Including: the size of residual coal, the size of the empty lane and the strength of the lower bearing medium, and finally proposed a targeted face mining recommendations.