Abstract:Based on the real stress field in soil slope obtained by nonlinear finite element method,the finite element technique for stability analysis of slopes is integrated with the simulated annealing method,which is artificial intelligence method. The searching technique of the minimum safety factor and the non-circular critical slip surface of slope is discussed. To resolve the limitation that the initial or trial slips can not accord with the constraint conditions in configuration during the process of searching critical slip surface,the conception of dynamic search domains is utilized which has the advantages of localized transform process and high efficiency. The test results demonstrate that this algorithm can pick out the global critical slip surface,and the circular or non-circular critical slip surface is reproduced as well.