长期以来,工程中通常用取定值的方法研究边坡的稳定性,认为只要采用了适当的安全系数,边坡就是安全的。但是取定值的方法不能考虑边坡工程地质条件和岩土体参数的不确定性。本文讨论的可靠性分析方法是处理不确定性问题的有效工具,其可以作为取定值方法的一个补充,使得整个分析基于一个系统的定量分析和合乎逻辑的推理。 For a long time, the stability of slopes has always been studied by the method of setting values, and the slope is considered as safe as long as the proper safety factor is adopted. However, the method of determining the value can not consider the slope engineering geological conditions and the uncertainty of rock and soil parameters. The method of reliability analysis discussed in this paper is an effective tool to deal with the problem of uncertainty, which can be used as a complement to the method of determining the value of the whole analysis based on a systematic quantitative analysis and logical reasoning.