常村煤矿S6-7综放工作面支承压力分布规律研究

S6-7 Fully Mechanized Caving Face Support Pressure Distribution in Changcun Coal Mine

针对综放工作面围岩稳定性和顶煤冒放性的控制,采用FLAC3D有限元软件对比分析了综放工作面的支承压力分布特征。数值模拟的结果表明:工作面推进过程中,煤体中部及煤层顶板处,支承压力沿走及倾向的变化规律相似,均随距工作面距离增加呈先增大后减小的变化趋势;工作面的推进距离对工作面超前及侧向支承压力峰值的影响较大,但与峰值的位置无关。

Aim at fully mechanized caving face surrounding rock stability and top coal caving control, it adopt FLAC3D finite element software comparative analysis of the fully mechanized caving face abutment pressure distribution characteristics. The numerical simulation results show that：it＇s similar on change law of the middle of the coal and the coat seam roof, the abutment pressure along the walk and tendency to variation during advance of the face, it trend to first increased and then decreased with increase away from the face distance;the advance distance of working face has greater impact on working face ahead and abutment pressure peak, but it has nothing to do with the location of the peak.