沪蓉国道鄂西段南里渡滑坡稳定性分析  

Analysis of Nanlidu Landslide in Hubei West Reach of Shanghai-Chengdu National Expressway

作　　者：刘世凯[1] 喻中权 王和群 袁涛 沈波 付义祥[1] 

机构地区：[1]武汉理工大学交通学院,武汉430063 [2]湖北恩施州交通局,恩施445000

出　　处：《武汉理工大学学报（交通科学与工程版）》2002年第6期706-709,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：湖北省自然科学基金资助项目 (编号 :2 0 0 1abb0 87)

摘　　要：通过勘察试验研究 ,认为南里渡滑坡形成的主要内因是三叠系巴东组软硬相间的岩性组合和构造断裂发育所致 .由于公路施工 ,改变了原地面的平衡状态 ,大量地表水渗入坡内 ,降低了强风化带岩体及斜坡土体的力学强度 ,形成了滑坡 .其变形破坏方式在滑坡的上、中、下部表现各异 。On the basis of investigation and tests, we considered that the main internal cause of Nanlidu landslide is the combination of the same degree of hardness of rock properties at Badong in Triassic and development of separation fracture. Due to the road's construction, which changed the original equilibrium state of earth surface, a large amount of ground water seeped into the slope, which reduced the mechanical strength of highly decayed rock and slope soil, and finally formed the landslide. The deformations and failure modes of the landslide showed differences in its different parts. We gave demonstrations separately in our research.

关 键 词：滑坡成因 岩性组合 软化变形 剪切蠕滑 

分 类 号：P642.22[天文地球—工程地质学]