岩土力学2012，Vol.33Issue(2)：569-576,8.
水位下降条件下黏性土边坡稳定性的图表法
Graphic method for stability of clay slopes during water level drawdown
摘要
Abstract
The water level drawdown of reservoir or river often causes the decrease of stability of bank slopes. Establishing a rapid assessment approach for evaluating the stability of slope under the variation of water levels has an important practical significance. Based on the water level drawdown of reservoir or river, and the transient unsteady seepage in clay slope, the program based on shear strength reduction finite element method (SSR-FEM) is developed to compute the factor of safety (FOS) for the slopes under the action of surface water and ground water together. Considering the influences of soil properties, relative permeability ratio and boundary conditions on slopes stability, the relative stability graphic method is presented under the integration parameters of soil properties, relative permeability ratio, drawdown ratio, slope angle, etc. The suggested method can rapidly obtain the FOS of existing slope and the design inclination ratio of planning embankment, and it can also be a helpful supplement for the existing stability chartsof simple slope.关键词
边坡稳定/强度折减有限元法/水位下降/图表法Key words
slope stability/ SSR-FEM/ water level drawdown/ graphic-method分类
建筑与水利引用本文复制引用
年廷凯,刘成,万少石,张克利..水位下降条件下黏性土边坡稳定性的图表法[J].岩土力学,2012,33(2):569-576,8.基金项目
国家自然科学基金(No.51179022) （No.51179022）
辽宁省自然科学基金(No.20071084) （No.20071084）
岩土力学与工程国家重点实验室基金(No.Z110807) （No.Z110807）
地质灾害防治与地质环境保护国家重点实验室基金资助项目(No.SKLGP2010K005). （No.SKLGP2010K005）
