兰海高速贵遵扩容段香火岩特大桥是我国西部深切峡谷区修建的典型特大型桥梁,其主要的工程地质问题是沿桥轴线方向两岸的陡斜坡稳定性问题,本文采用多种分析方法,结合勘察资料选取合理的物理力学参数,并采用传统刚体极限平衡法和强度折减法从局部到整体对岸坡稳定性进行5种不同工况计算分析,这为岸边坡提供重要的依据,桥梁跨径选择具有参考指导意义。 The main engineering geological problem is the steep slope stability along both sides of the axis of the bridge. In this paper, a variety of analytical methods are used to analyze the stability of steep slopes. According to the survey data, reasonable physical and mechanical parameters are selected, and five different working conditions are calculated and analyzed by using the traditional rigid body limit equilibrium method and strength reduction method from the local to the whole. This provides an important basis for the bank slope, Path selection has the meaning of reference.