四川省省道S103线某滑坡的稳定性分析

Stability Analysis of a Landslide along Provincial Highway S103 in Sichuan Province

以四川省省道S103线马边县某滑坡治理工程为依托,采用极限平衡法(Janbu法)和数值分析法(有限元强度折减法)计算滑坡体各剖面在自然和暴雨工况条件下的稳定系数。研究结果表明:Janbu法的计算结果与有限元强度折减法稍有差别,但总体趋势一致,即在天然工况下与暴雨工况下滑坡整体欠稳定,且暴雨工况下的稳定系数较天然工况下明显减小。

In relation to a landslide control project in Mabian County along the provincial highway S103 in Sichuan Province, limit equilibrium method （Janbu method） and numerical analysis method （finite element strength reduction method） were used to calculate the stability coefficient of each section of landslide in the case of natural and rainstorm conditions. The study shows that the result calculated by JANBU method has a little difference with that by finite element strength reduction method, but they have the consistent tendency, that is to say, in both natural and rainstorm conditions, the landslide is instable, and the stability coefficient in rainstorm condition, comparing to that in natural condition, is reduced significantly.