某高速公路滑坡的数值模拟及后缘坡体稳定性分析

Numerical Simulation of Expressway Landslide and Its Rear Edge Stability

通过对诸永高速公路台州段1^#滑坡（K120＋085～K120＋169）工程地质特征的分析，指出沿线区存在很多因修建公路引发的工程滑坡问题，然后采用边坡稳定性FLAC／Slope分析软件，对滑坡滑动前、后工况下稳定性进行数值模拟，并对滑移后的后缘坡体稳定性进行了数值分析。剪应变率云图和稳定性分析结果表明，滑动后的后缘坡体仍处于不稳定状态，又形成了新的滑坡体。

Based on analysis of the engineering geology characteristic of No. 1 landslide of Taizhou part of the Zhu- Yong expressway（K120＋085～K120＋169）, it is pointed out that there are a lot of problems of landslide due to the construction of highway along the line. By employing software FLAC/Slope, the stability of the landslide is analyzed by numerical simulatiion under two states before and after the slidding, and the stability of its rear edge after slide is also simulated. The results indicate that the rear edge of the landslide after slide is still unstable, and has formed a new landslide.