Under the condition of plane strain

finite element limit equilibrium method is applied to evaluate the stability of tailings dam. This method can be better combined with characteristics of the limit equilibrium analysis methods and finite element stress analysis. And it is based on the elastoplastic stress-strain analysis. Considering the overall stress field of the structure reasonably and accurately; the most dangerous location of slip surface and the corresponding minimum safety factor are determined by Hooke-Jeeves optimized searching method. An example of stability analysis of tailings dam engineering practice is proposed. The differences of safety factor quantity

shape and location of slip surface among stability methods: finite element limit equilibrium method

limited equilibrium slice method and finite element shear strength reduction method

are compared and studied in the normal

flood and special conditions. The safety assessment of tailings dam is made by using finite element limit equilibrium method. The results can provide a reliable basis and technical support for the safety of the design and construction of tailings dams.