运用Geo Studio软件进行数值模拟,分析降雨条件下的瞬态渗流场及强度参数的弱化规律,通过Geo Studio的稳定性分析运用间接耦合法实现增载弱化效应的耦合,结果发现综合考虑耦合灾变效应的边坡稳定性衰减率最大;结合位移动力学,建立了边坡稳定性系数与地下水位变化及强度参数的定量关系式,揭示了降雨条件下边坡稳定性的灾变机制是坡体结构性质损伤和动力增加的综合结果。 Geo Studio software was used to simulate the transient seepage field under rainfall conditions and the weakening law of strength parameters. The coupling of weakening effect of loading by Geo Studio was realized by the stability analysis of Geo Studio. The results showed that considering coupling catastrophic effect The decay rate of the slope stability is the largest. Based on the displacement dynamics, the quantitative relationship between the slope stability coefficient and groundwater level variation and strength parameters is established. It is revealed that the catastrophic mechanism of the slope stability under rainfall is the structural damage And the combined result of power increase.