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为了研究孔隙水压力对深部高应力软岩巷道围岩稳定性的影响规律,利用有限差分程序对不同孔隙水压力工况下深部软岩巷道围岩稳定性及孔隙水压力分布规律进行了数值仿真,结果表明:随着孔隙水压力的增加,围岩应力集中程度及其影响范围呈增加趋势,顶底板集中区到巷道中心点的距离逐渐趋于定值;随着孔隙水压力的增加,围岩位移量增加,其趋势为:两帮明显大于顶板,顶板大于底板,围岩治理的重点在于两帮收敛变形控制。
In order to study the effect of pore water pressure on the surrounding rock stability of deep high stress and soft rock roadway, the finite difference program is used to simulate the surrounding rock stability and pore-water pressure distribution of deep soft rock roadway under different pore pressure conditions The results show that with the increase of pore water pressure, the stress concentration of surrounding rock and its influence range are increasing. The distance from the center of floor to the center of the roadway tends to be constant. With the increase of pore water pressure, The displacement of rock increases, the trend is: two groups is obviously larger than the roof, the roof is greater than the floor, rock control focuses on the convergence of two deformation control.