中文摘要：

针对目前边坡稳定性分析中对承压水作用的模拟过于简化,导致分析方式不当的问题,提出用滑面附近孔隙水压力指示承压水的作用,分析承压水孔压的时空变化规律及其对坡体稳定性的影响.根据不同渗透条件下边坡稳定性计算结果分析,提出渗透系数比的概念,分析随渗透系数比的变化,枯水期孔压在空间维度上的具体分布及其所对应的边坡稳定性变化规律.分析在丰水期前缘有无堵塞的2种情况下,随降雨时间持续期的变化,滑面附近孔压的时空变化规律,以及其对边坡稳定系数的影响.对工程实例进行分析研究,结果表明丰水期边坡变形滞后于降雨及其产生的承压水作用.

英文摘要：

The present simulation of confined groundwater effect in slope stability analysis was too simplified to guarantee an appropriate analysis mode.Considering the problems above,this thesis proposed a concept of using pore water pressure near the slip surface to indicate this effect,and then analyzing the temporal and spatial variation laws of pore water pressure induced by confined groundwater and the consequent influence on slope stability caused by this variation.According to the analysis of slope stability results under different permeability conditions,the concept of seepage coefficient ratio was proposed,and the spatial distribution of pore water pressure in dry season with various seepage coefficient ratios was analyzed,and then the variation laws of slope stability corresponding to different seepage coefficient ratio was obtained.Under two conditions including the permeable layer blockage condition and non-block condition at front edge in wet season,the temporal and spatial variation laws of pore water pressure and effect on the slop stability factor caused by the variation with different rainfall duration were analyzed.Engineering practice was analyzed,the results show that the displacement of slope in wet season lags behind the rainfall and the variation of confined groundwater.