论文部分内容阅读
针对受采动影响的巷道变形破坏严重,对动压巷道变形起决定作用的围岩破裂区进行理论分析,得到塑性区和破裂区交界处的径向应力和切向应力公式,作为围岩应力大小的参考依据;同时得到破裂区和塑性区半径公式,作为动压巷道围岩控制方案设计的依据,并结合锚杆支护理论,得到动压巷道围岩控制方案.最终在鹤壁五矿动压巷道工程试验中得到运用,巷道变形得到明显控制,说明锚杆加锚索加喷射混凝土的控制方案合理有效.
In view of the severe deformation and destruction of the roadway affected by mining, the theoretical analysis of the surrounding rock failure zone that plays a decisive role in the deformation of the dynamic pressure roadway, the radial stress and tangential stress formula at the interface between the plastic zone and the rupture zone are obtained, The size of the reference basis; the same time, the rupture zone and plastic zone radius formula, as the pressure swing roadway surrounding rock control program design basis, combined with bolt support theory to get dynamic pressure surrounding rock control program. The application of pressure roadway engineering test, laneway deformation was obviously controlled, indicating that the control program of bolt plus anchor cable plus shotcrete is reasonable and effective.