Application of point safety factor to study on spatial sliding mechanism of landslide

被引：0
|
作者：
Yang T. [1 ]
You X. [2 ]
Qin Y. [2 ]
机构：
[1] School of Civil Engineering, Southwest Jiaotong University
[2] Chengdu Hydroelectric Investigation and Design Institute of SPC
来源：
Xinan Jiaotong Daxue Xuebao/Journal of Southwest Jiaotong University | 2010年 / 45卷 / 05期
关键词：
Landslide; Numerical computation; Point safety factor; Sliding mechanism;
D O I：
10.3969/j.issn.0258-2724.2010.05.023
中图分类号：
学科分类号：
摘要：
In order to describe quantitatively the spatial sliding mechanism of landslides, a 3-D numerical model was set up, and spatial stress states and sliding directions of elements in slide zone were obtained. The ratio of shear strength to shear stress paralleling to sliding direction was defined as point safety factor of element. Therefore, the spatial sliding mechanism of a landslide can be evaluated through analyzing the spatial distribution characteristic of point safety factor in a slide zone. The research indicates that the distribution of point safety factor in a slide zone is continuous and shows the same regularity as sliding mechanism given by macrogeologic analyses. As a result, point safety factor can be taken as a quantitative assessment index of spatial sliding mechanism of landslides.
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页码：794 / 799
页数：5
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