Three-dimensional finite element analysis on stability of back side slope of water diversion and power generation system powerhouse in right bank of a hydropower engineering

According to the actual situation of complex geological conditions and more excavation step for a hydropower engineering dam area,the slope stability of back side slope of right bank powerhouse in a hydropower engineering was analyzed by three-dimensional finite element.The deformation law and stress distribution characteristic of slope excavation during unloading and supporting were obtained.Failure characteristics and position of slope were given,and the treatment scheme of slope were proposed.The slope stability was analyzed in the form of safety factor by introducing strength reduction method.Strength reduction method can be proved by slope standard,and safety factored of slope stability was used,the global stability of slope can be judged visually and qualitatively.Practical application showed that the analysis results and reinforcement design scheme were reasonable and effective for slope engineering stability.