The Slope Stability Analysis Of Taking Into Account The Seepage And Stress Coupling Effect

Slope stability affects the feasibility, security, and the rationality of the whole hydraulic engineering program, so that it decides whether the program will be successful or not. As to the amounts of causes of the slope stability, fluidsolid coupling which researchers and engineers pay much attention to is a most crucial and hard one. To solve the problem of fluidsolid coupling, researchers got some way to simplify it, for instance, Instead of weight method and Hydrostatic pressure method. But these methods cannot be applied well to actual situation. In actual fact, seepage field and stress field affect each other:Seepage field make the cohesive strength and internal friction angle of the soil change and then cause the redistribution of the soil’s stress. The stress of the soil also affects the skeleton of the soil and make the pore space ration of the soil change, which directly affects the permeability coefficient. So making a study of fluidsolid coupling has some actual meaning to slope stability.It has got some success with FEA (Finite Element Analysis) in studying fluidsolid coupling. But it is still blank when the fluidsolid coupling meets the interpositions. We assume the interposition is a tube which is osmosis, investigating how it affects the problem of slope stability when the seepage field and the stress field in a coupling situation. This essay is based on soil slop stability analysis, finite element analysis of seepage theory and equivalent hydraulic conductivity,Linking the finite element strength reducation method. We regards the plastic strain zone has un-through to the top and the model has been changed as the critic of the slope Instability,we set up a ABAQUS model,Analysis and comparison the ABAQUS model is reasonable and feasible.On the basis of this, we made a Project example,Simulation analysis it.In the end,we can know the effection of the Cohesive force,the Internal friction angle and the Ratio of slope,give a helpful Suggestion to the design and consurtction of the project.