大埋深动压沿空顺槽支护技术研究及应用

Research and Application of Support Technology in Dynamic Pressure Excavation Roadway with Large Buried

为实现付村煤矿3下412与3下408工作面的顺利接续,以3下412工作面上顺槽为工程背景,采用理论分析和数值模拟得出3下412工作面上顺槽两帮应力分布不均、岩体裂隙发育、围岩破碎及变形非对称。据此提出高强预应力让压锚杆和锚索非对称平衡支护方法,使巷道应力重新达到平衡。

In order to realize the smooth connecting of 3doun412 and 3down408 working face in Fucun coal mine,based on theoretical analysis and numerical simulation, the stress distribution of the two channels in the next two working faces of 3doun412 working face is unequal, and the rock fissure is developed, the rock is broken and the deformation is not symmetrical. The asymmetric support method of prestressed anchor bar and anchor cable is put forward to make the stress of roadway reach equilibrium again.