动水环境离散裂隙岩体时变浆液灌注仿真模拟OA

In achieve the simulation of grouting in fractured rock masses under flowing water conditions,a coupled hydro-mechanical model is developed within a porous-fracture medium framework to describe the diffusion of time-dependent grout,and a three-dimensional discrete fracture network representative of underground engineering conditions is reconstructed using the Monte Carlo method,to analyze the grout propagation and sealing performance under high hydraulic head gradients.The results indicate that:the spatial architecture of fracture networks governs grout migration pathways,and the grout diffusion velocity decreases rapidly due to pressure attenuation and viscosity growth;increasing grouting pressure can effectively enhance the filling of secondary fractures,though the incremental sealing effect diminishes;with rising hydraulic gradient,grout propagation against the flow becomes more difficult,while downstream zones experience significant erosion and scouring,leading to premature termination of the effective filling process and a notable reduction in grout retention.