Bottom factors applied to the zoning study of the risk levels of landslides in the Three Gorges reservoir area

被引：5

作者：

Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China ^{[1
]}

不详 ^{[2
]}

机构：

[1] Institute of Mountain Hazards and Environment, Chinese Academy of Sciences

[2] University of Wisconsin, Madison

来源：

Wuhan Univ J Nat Sci | 2006年 / 4卷 / 761-766期

关键词：

Bottom factors; Landslide; Three Georges area;

D O I：

10.1007/BF02830161

中图分类号：

学科分类号：

摘要：

Without taking inducing factors into consideration, this paper adopts a quantitative analysis of the bottom factors in the Three Gorges Reservoir area, studies the relationship between the bottom factors and the development of landslides, and then zones the area according to risk levels. The bottom factors adopted in this paper include lithological characters(U1), gradient(U2) > slope form (U3), difference of height (U4), and slope orientation (U5). In 4650 km2 of the studied area, the very high, high, medium and low hazard degree areas respectively were 57.94 km2, 2305.15 km2, 1241.6 km2, 1045.31 km2. The methodological steps are (1) the inversion statistic analysis, (2) the analysis of contribution ratio and weighing, (3) getting results via fuzzy evaluation of risk levels.

引用

页码：761 / 766

页数：5