地下水位升高时黏性土无限边坡的水平位移

在平面应变条件下，采用摩尔-库仑强度准则和相关联流动法则，对地下水位升高过程中平移模式下的黏性土无限边坡进行了弹塑性分析，探讨了坡体变形的变化规律，分析了边坡安全系数和坡面水平位移的关系。数值分析表明，土坡的初始应力状态和抗剪强度指标对地下水位升高过程中滑坡前塑性区的厚度、坡体内塑性应变和水平位移的发展都有很大影响。

Horizontal displacements in infinite slopes of cohesive soil due to raise of groundwater table

Based on the Mohr-Coulomb failure criterion and an associative plastic flow rule in the plane strain regime, an elastoplastic analysis is presented for the deformation in an infinite slope of cohesive soil with the model of translational slide due to the raise of groundwater table. And an attempt is made to establish a relationship between the horizontal displacements developed within a slope before failure and the safety factors. The numerical results illustrate that, as the groundwater table rises, the initial state of stress and the shear strength of soil have an important influence on the thickness of plastic zone, the plastic strains and the horizontal displacements before failure.