Study On Evolution Law Of Seepage Induced By Deep Confined Water In A Mud-intercalated Crenellated-fault

In recent years,a large number of rock projects are started inevitably with cause including the rapid development of the national economy,the construction of a large number of subways,the construction of the infrastructure and so on.Rock mechanics and permeability is uncertain as a lot of joints and infilleds exist in the rock mass.The redistribution of in-situ stress and water pressure in the rock mass is caused by artificial disturbances.Water inrush is familiar in various tunnels and roadways.It is the key factor of damaging rock excavation that the seepage penetrate the joints.Study on the evolution law of the seepage of infilled joints in rock mass is closely related.The research on the evolution law of the seepage of the infilled joints in the rock mass is closely related to the safety of confining pressure and construction.It is also the difficul and key point of the research at home and abroad.For the study of infilled the seePage in fractureed rock mass evolution,this Paper uses similar materials testing,3D fracture seePage test system and COMSOL finite element analysis software Multiphysics,through physical experiments and numerical calculation,the main research work is as follows:(1)By changing the water cement ratio,the physical and mechanical properties and permeability of the similar materials are studied.(2)Using a large physical simulation experiment reveals the bearing angle of fractureed rock infilled pore water pressure time and space dynamic evolution analysis of fracture infilled materials on the pore water pressure and rock dynamic evolution process and the rate of change,using "adjacent measuring points" method to study the hydraulic gradient variation of fractureed rock mass.(3)Based on the physical model test model,finite element analysis and modeling of COMSOL Multiphysics,respectively.The different angles of fractures,fractures with different permeability coefficient,different fracture aperture,different rock mass permeability coefficient of rock under different confining pressure with the angle of fracture seePage evolution characteristics,pore water pressure to variation of pore flow line evolution.