Abstract: This paper analysed the geology investigation data of left bank, and calculated stability coefficient under nature, seismic conditions and with crack hydrostatic pressure. By calculation, conclusion was gotten that with normal water storage, under condition of VII degree earthquake or high crack hydrostatic pressure, the left bank slope may be unstable. Then, advices were put forward that treatment measures should be adopted, such as water diversion, support, pressure relief and concrete anti-slide pile.

摘要： 对坝址区左岸的工程地质勘测资料进行了分析，计算出自然状态、地震、裂隙静水压力等不同环境地质条件下水库左岸滑坡体稳定性安全系数，判断左岸滑坡体的稳定状态。经计算，坝址区左岸滑坡体在水库正常水位状态下遇Ⅶ度地震或有高裂隙静水压力影响时,可能处于不稳定状态，建议对左岸滑坡体进行工程处理，采用排水、支挡、减压、混凝土抗滑桩等措施进行整治。