The characteristics and distribution types of soil parameters have great influence on the reliability of slope stability.However,this problem is not studied sufficiently in the past.In the present paper,the probabilistic methods of the slope reliability were used,and the influence of the limit state equation,variability and distribution types of soil parameters to the slope reliability were studied.The difference between the reliability index calculated by the probabilistic and non-probabilistic reliability method was compared. The results of the probability-based slope stability analysis showed that the simplified Bishop method is more rational than the Sweden slice method.The lognormal distribution function for soil parametercand student-T distribution function for soil parameterφwere suggested to the situation with rare samples and the distribution function of the soil parameters is difficult to determine.The non-probabilistic reliability analysis method can be used and served as an effective complement to the probabilistic methods.
