Stability Analysis and Safety Evaluation for Complicated Foundation of Tingzikou Gravity Dam

Based on hydropower projects in Tingzikou,anti-sliding stability for the complicated foundation of gravity dams is analyzed by using non-linear FEM Computed by the strength reserve coefficient method,the gradual destruction process of dam foundations is obtained and the most dangerous sliding mode of system is discovered.Meanwhile,the method based on improved equal safety factor is used to verify the stability of corresponding sliding faces in accordance with the design standard.Finally,the safety evaluation is given,and the results show that the anti-sliding stability of reinforced dam foundations is safe.