容重增加法分析边坡稳定性的研究

Analysis of Slop Stability with Unit Weight Increase Method Highway with Grouting Method

考虑岩土变形的影响,岩土体的本构关系采用完全弹塑性模型,强度采用修正的Drucker-Prager屈服准则,以边坡最大水平位移增量与计算重力加速度增量之比达到极值作为边坡破坏的标准。文中对一工程边坡的稳定性进行了分析,并利用临界破坏状态时边坡的等效塑性应变图来确定潜在滑动面,为工程设计提供了依据。

Considering the influence of rock deformation,with the complete elastic plastic model for the constitutive relation of rock mass and modified Drucker-Prager yield criterion for the strength,slope failure is judged based on the extreme value of the ratio between the maximum horizontal displacement increment and gravity acceleration increment.This paper analyzes the stability of a slope and determines its potential sliding surface according to equivalent plastic strain diagram in the critical failure,which can be reference for engineering design.