深埋大采高长壁综采工作面矿压规律研究

Study on ground pressure regularity of deep buried large mining height fully mechanized face

为解决煤矿深埋大采高综采工作面冒顶以及煤壁片帮问题,研究该矿综采工作面、回采巷道矿压分布规律,对工作面煤壁片帮、冒顶情况和回采巷道支护效果进行系统观测。观测结果表明:在综采工作面中部易发生冒顶片帮;回采巷道变形位移较大;周期来压时工作面与回采巷道有明显的来压现象。对观测结果进行分析,根据工作面矿压分布规律提出控制冒顶片帮的合理化建议,优化回采巷道支护方案,防止冒顶片帮事故发生。

In order to solve problems of roof caving and coal wall spalling in fully mechanized mining face with large mining height, its ground pressure regularity was studied, support effect of coal wall slice, roof fall and roadway were systematically observed. The results showed that roof fall was easy to occur in the middle of fully mechanized mining face; deformation and displacement of the roadway were large; the working face and roadway had obvious pressure in periodic weighting period. After analysis of observation result, rational suggestions to control roof fall were proposed according to distribution law of rock pressure in working face. Support scheme of gateway was optimized to prevent occurrence of roof fall accidents.