三峡大学学报（自然科学版）2017，Vol.39Issue(2)：54-59,6.DOI:10.13393/j.cnki.issn.1672-948X.2017.02.012
库水位变化和降雨条件下边坡渗流特性及稳定性分析
Analysis of Seepage Characteristics and Stability of a Slope under Conditions of Reservoir Water Level Fluctuation and Rainfall
摘要
Abstract
In Southwest of China,the geological structure is complex and the rainfall is abundant;so the influence of groundwater on the stability of reservoir slopes is relatively prominent.Taking an inlet slope of the discharge structure in that area as the prototype,the seepage and stability of the slope under different conditions of rainfall and the reservoir water level fluctuation are simulatively calculated based on saturated-unsatu-rated seepage theory,limit equilibrium theory and the finite element analysis software (Geo-Studio).The calculation results show that the groundwater level of the slope changes exactly in accordance with the reservoir water level,slope stability safety factor firstly decreases with the rise of reservoir water level,and then increases slowly.When the reservoir water level drops,the slope stability safely factor coefficient firstly decreases and then increases;and the lower the rate of decline is,the smaller the stability safety factor will be.Under the condition of rainfall infiltration,the groundwater level of the slope will rise to a certain extent;and the stability safety factor of the slope accordingly decreases at the same time.The research results can provide a reliable basis for slope stability analysis and the safe operation of the reservoir.关键词
库水位升降/降雨入渗/地下水位/渗流特性/稳定性Key words
reservoir water level fluctuation/rainfall infiltration/groundwater levels/seepage characteristics/stability分类
建筑与水利引用本文复制引用
卢博,郭永成,赵二平,龚章龙,汪冲..库水位变化和降雨条件下边坡渗流特性及稳定性分析[J].三峡大学学报（自然科学版）,2017,39(2):54-59,6.基金项目
国家自然科学基金重点项目(51439003) （51439003）
湖北省自然科学基金项目(2014CFC1139,2015CFC831) （2014CFC1139,2015CFC831）
三峡库区地质灾害教育部重点实验室(三峡大学)开放研究基金项目(2015KDZ17) （三峡大学）
三峡大学科学基金(KJ2013B004) （KJ2013B004）
