大采高综采工作面覆岩活动规律研究

Study on the overburden activity law of fully mechanized coal face with large mining height

相对于普通综采工作面,大采高综采工作面回采空间大,上覆岩层运动范围也相应较大。为了得到泉店煤矿大采高综采工作面上覆岩层的活动规律,采用理论分析与数值模拟计算的方法,分析工作面回采后顶板的位移量、垮落状态、塑性区分布规律以及工作面超前支承压力的分布规律。

Compared with the general fully mechanized coal mining face, the mining space of fully mechanized coal face with large mining height is large and the movement range of overlying strata is correspondingly larger. In order to obtain the activity law of overburden in fully mechanized mining face of Quandian Coal Mine, the theoretical analysis and numerical simulation method was used to analyze the displacement, collapse state, plastic zone distribution law and the distribution law of advance bearing pressure in working face.