水利水电技术2017，Vol.48Issue(3)：146-152,157,8.DOI:10.13928/j.cnki.wrahe.2017.03.026
库水和降雨联合作用下岸坡稳定影响因素敏感性分析
Sensitivity analysis on bank-slope stability impacting factors under joint-effect of reservoir water and rainfall
摘要
Abstract
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.关键词
库水位/下降速率/降雨强度/敏感性分析/联合作用/库岸边坡/三峡水库Key words
water level/drawdown rate/rainfall intensity/sensitivity analysis/joint-effect/reservoir bank slope/Three Gorges Reservoir分类
天文与地球科学引用本文复制引用
方景成,邓华锋,肖瑶,张恒宾,王晨玺杰..库水和降雨联合作用下岸坡稳定影响因素敏感性分析[J].水利水电技术,2017,48(3):146-152,157,8.基金项目
国家自然科学基金重点项目(51439003) （51439003）
国家自然科学基金资助项目(5167912) （5167912）
湖北省自然科学基金重点项目(2015CFA140) （2015CFA140）
