孔隙水对深部巷道稳定性影响研究

Study on the effects of pore water on stability of deep roadway

随着经济的飞速发展,对资源的需求量越来越大,长期大强度的开采导致浅部的矿产资源已日渐枯竭,矿产资源的开采向深部转移,巷道的稳定性将受到高地应力和高孔隙水压力等深部恶劣环境的影响。因此本文运用岩体力学理论和有限差分软件FLAC3D,考虑流-固耦合的情况下,对高地应力下孔隙水压力的巷道的变形和稳定性进行了理论分析和数值模拟,得到孔隙水的存在使巷道变形增大,巷道的稳定性减弱。

With the rapid development of economy, the requirement for resources is more and more big. Long - term high intensity mining cause the depletion of mineral resources in shallow, the exploitation of mineral resources transferred to deep, the stability of the tunnel will be affected by the high ground stress and high pore water pressure and other harsh environment. In this paper, Considering the fluid -solid cou- pling, The stability and deformation of tunnel are analyzed theoretically and simulated numerically under the high pore water pressure and high by using rock mechanics theory and the finite difference software FLAC3 D. Get that the existence of the pore water lead the deformation of tun- nel increases, so the stability reduce.