The Study And Analysis For Slope Stability Of Reservoir

This dissertation summarized all kinds of rigid-equilibrium method of slope stability analysis all over the world, analyzed and contrasted the conditions suitable for the methods above, in which transfer coefficient method was the best one for studying the coast fathering so that it was adopted to analyze the stability of slide body of actual irrigation works.Transfer coefficient method has two solutions: one is the strength reserve method;the other is the overload method. The result worked out with strength reserve method is closer to the result of Bishop method than that one of overload method and the overload method brings about a bigger error through contrasting with Bishop method. So believe that strength reserve method is more exactly.Under the unknown condition of slip surface, the slip surface worked out with FEM strength reduction method is almost consistent with that one of actual irrigation works. Calculating the slip surface can provide correct guide for reinforcing slide-body.The change of reservoir water level makes a large influence on slope stability on account of the specialties of reservoir slope. For analyzing the influence of sharp-falling of water level, the dissertation deduced the formula of seepage theory, programmed to work out the infiltrating force under the condition of water level sharp-falling, and put forward the method, based on the infiltrating force above, calculating the safe degree of water level sharp-falling with FEM strength reduction method.In Shilipu hydraulic power plant storeroom slope body stability analysis project of Sichuan province, the methods below were used to analyze aquatic slide slide-body: transfer coefficient method, FEM safety factor alternate method, FEM strength reduction method, slope stability-safety analyzing method, in which slope body is stable on the common condition, but slides partly on the condition of water level sharp-fall ing. Suggested to reinforce the slide-body.