Through the research of slope stability analysis method on slice mode and response surface method

finite element method in response surface method（RSM） is replaced by iterative calculation process of implicit stability coefficient expression on slice mode

aiming at the absent of explicit expression in slope reliability calculation and the specialty of stability coefficient calculation method and classical response surface method.Then the limit state equation of slope reliability analysis is confirmed on slice mode.Combining classical response surface method with the stability analysis method

a new method for slope stability reliability analysis is established.And then

the paper makes the method be stability analysis system that can deal with circle and non-circle slide surface under many soil layers.The IRSM brought forward in this paper has simple theory

high computational efficiency and also high precision in some degree.So the method is applicable to slope reliability approximate calculation.