深井大倾角综采工作面覆岩破坏特征研究

Study on the Overburden Characteristics of Deep Shaft Large Angle Fully Mechanized Working Face

针对深井大倾角工作面覆岩破断和运移规律的复杂性,通过陈蛮庄矿大倾角工作面的实际数据,采用理论分析从走向和倾向分析了顶板运移形成的结构:走向形成砌体拱小结构,倾向形成砌体梁结构,总体形成砌体板结构。通过经验公式计算出三带高度,并运用微震监测系统,检验了经验公式计算的三带高度,并且进一步从工作面垂直、倾向和走向三个方面分析上覆岩层的破坏特征。

Based on the complexity of the breaking and migration rule of the overburden in deep shaft large angle working face, with theoretical analysis, the rend and tendency of roof migration structure based on the measured data of Cbenmanzhuang Mine deep shaft large angle working face. The rend makes small masonry arch structure, masonry beam structure on tendency and masonry plate structure as a whole. The height of three zones was calculated through the experienced formula. Micro seismic monitoring system, as a new-rise method, was used to examine the result of the height of three zones calculated through the experience formula, further studied the damage characteristics of overburden from the orientation of vertical, trend and tendency.