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针对110国道某段路堑边坡开挖引起失稳的具体情况,在对现场边坡进行详细地质勘察的基础上,对边坡出现滑塌和变形破坏的失稳问题进行了研究。采用大型数值计算软件FLAC3D,对含有地质结构弱面高路堑边坡的变形破坏进行了数值模拟分析,揭示了边坡的失稳状态及变形破坏特征,并提出了以预应力锚索为主,辅以框架锚杆、排水、减缓坡率等工程防治措施,防治效果良好,成功解决了110国道穿越该地区时的高路堑边坡的稳定性问题,值得推广。
Aiming at the specific situation of instability caused by excavation of a section of cut along National Highway 110, this paper studies the instability problem of landslide and deformation failure on the basis of detailed geologic survey of on-site slope. The numerical simulation software FLAC3D is used to analyze the deformation and failure of the high cutting slope containing the weak structure of the geological structure. The instability status and deformation and failure characteristics of the slope are revealed. Supplemented by the framework of the anchor, drainage, slope reduction and other engineering control measures, prevention and control of good results, the successful solution to the 110 State Road across the region when the stability of the high cutting slope, it is worth promoting.