中文摘要：

库岸边坡的稳定性受众多因素综合影响,其敏感性分析一直是相关研究的重要内容。以三峡库区某库岸边坡为研究背景,根据边坡监测变形,确定了库水位下降速率和降雨强度为主要外部影响因素,采用敏感性系数法,进行了单一因素敏感性分析以及双因素联合作用下的敏感性分析。结果表明：单因素作用时,库水位下降速率对边坡的稳定性影响更为显著;在库水位下降的过程中叠加降雨作用,边坡的安全系数明显降低,各影响因素的敏感性逐渐增大,说明联合作用对库岸边坡稳定的影响显著。因此在库岸边坡的稳定性研究中,应该根据外界影响因素进行综合分析,重点考虑各因素的联合作用,这样才能更好地评价边坡的稳定情况。研究成果可为库岸边坡的稳定性评价和治理提供参考。

英文摘要：

As the stability of reservoir bank slope is comprehensively impacted by many factors,the sensitivity analysis is an important content of the relevant study. By taking a reservoir bank slope within the area of the Three Gorges Reservoir as the study background,both the drawdown rate and the rainfall intensity are determined to be the main outside impacting factors in accordance with the monitoring on the slope deformation,and then the single factor sensitivity analysis and the analysis on the sensitivity under the dual-factor joint-effect are carried out with the sensitivity coefficient method. The result shows that the impact from the drawdown rate of the reservoir water level on the stability of the slope is more significant,while if the effect from rainfall is superposed during the drawdown of the reservoir water level,the safety factor of the slope is to be significantly decreased and the sensitivities of all the impacting factors are to be gradually increased,which indicates that the joint-effect has a significant impact on the stability of the reservoir bank slope. Therefore,in the study of the stability of reservoir bank slope,it is necessary to make a comprehensive analysis according the outside impacting factors and emphatically take the joint-effect of all the impacting factors concerned in account. In this way,the stability of the slope can be more satisfactorily evaluated. The study result can provide a reference for evaluation and control of the stability of the reservoir bank slope.