边坡失稳现象与降雨有着紧密的联系。介绍了土体中水分的运动规律以及边坡稳定性计算的基本方法,并通过计算,分析了在不同降雨条件下边坡内部孔隙水压力及边坡稳定性系数的变化情况。 Slope instability and rainfall are closely linked. The law of water movement in soil and the basic method of slope stability calculation were introduced. The change of pore water pressure and slope stability coefficient under different rainfall conditions were analyzed.