高地应力巷道围岩的蠕变数值模拟

通过分析高地应力下巷道围岩的变形破坏特点，采用Poynting-Thomson模型（H-M模型）计算模式利用FLAC^3D程序进行模拟研究，该程序采用显式差分法，可模拟岩土或其他材料的三维力学行为，包括材料的屈服、塑性流动、黏性流动、软化直至大变形．为了分析不同原岩应力、材料的弹性模量及黏滞系数对巷道围岩影响，分别采用了不同深度及不同比例系数．研究结果表明：巷道围岩的位移移近量随着时间的增加而增加但最终趋于稳定，其开始时存在位移移近，加速段，为此建议高应力条件下支护一定要及时，这对高地应力巷道施工具有一定的指导意义．

Numerical Simulation of Creep for Surrounding Rock Under High Stress

Through analyzing the deformation and failure characteristic of surrounding rock of laneway under high stress,and adopting PoyntingThomson model(H-M model),the deformation process was simulated by FLAC~(3D) program.The explicit difference method was used to simulate the 3D mechanical behaviors of rocks and soils or other materials,including yield,plasticity flow,viscosity flow,softening,and even large deformation.In order to analyze the effects of different initial stress and elasticity module and viscidity coefficient of materials on surrounding rocks of laneway,different depths and proportional coefficients were used.The results show that 1) the displacement of surrounding rock increases with time going on,and 2) it accelerates at the initial time and tends to be stable at last.Therefore,it is recommended that the high stressed roadway should be supported as timely as possible.This is significant for the construction of high stressed roadway.