高填方路基诱发滑坡机理分析  

Mechanism analysis of landslide induced by high-filled roadbed

作　　者：孙红月[1] 吕庆[1] 

机构地区：[1]浙江大学建筑工程学院,浙江杭州310027

出　　处：《自然灾害学报》2006年第5期168-171,共4页Journal of Natural Disasters

基　　金：国家自然科学基金资助项目(40502026)

摘　　要：通过对上三高速公路K92滑坡工程地质条件、滑坡特征及滑坡稳定性的分析,采用不分离接触数值模型模拟边坡的变形破坏,初步揭示了松散覆盖土层上厚度较大的高填方路基是诱发滑坡的内在机理。该类型滑坡的产生是由于路基堆载使坡体产生垂直方向的压缩变形,也使坡体向坡脚方向产生一定的挤出变形,最后诱发了推动式滑坡。By analyzing the engineering geological condition, characteristic and stability of a landslide at Shang-san highway, and simulating its deformation failure with non-separation contact model, it is preliminarily revealed that the high-filled roadbed with larger thickness on loose overburden is inherent mechanism inducing the landslide. This kind of landslide results from vertical compressive deformation of slope mass and some extrusion deformation of slope toe.

关 键 词：高填方路基 滑坡 机理分析 不分离接触模型 

分 类 号：TU457[建筑科学—岩土工程]