Research on slope instability process under rainfall condition

According to spatial-temporal distribution features of regional precipitation,structural composition and mechanical parameters of natural slope,by introducing saturated-unsaturated infiltration numerical simulation technology under rainfall infiltration condition,we conduct a stability analysis of saturated-unsaturated seepage field for a landslide body under rainfall infiltration condition,which is located at the site of Shuangxi Hydropower Station in Jiangxi Province.And,the stability of the landslide under various rainfall conditions is analyzed by Morgenstern-Price method of rigid limit equilibrium method.The results show that influences of rainfall characters,such as rainfall intensity,rainfall type,on stability of slope can not be ignored;the safety factors of slope drop to the lowest 8～12 h after the rainfall ending.