[1]杨永红,刘淑珍,王成华.土壤含水量减少对提高浅表层滑坡稳定性的影响[J].水土保持研究,2007,14(05):290-292.
　YANG Yong-hong,LIU Shu-zhen,WANG Cheng-hua.Impacts of Decrease of Soil Moisture Content on Stability of Shallow and Surface Landslide[J].Research of Soil and Water Conservation,2007,14(05):290-292.
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土壤含水量减少对提高浅表层滑坡稳定性的影响

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 14 期数: 2007年05期 页码: 290-292 栏目: 出版日期: 1900-01-01
Title:
Impacts of Decrease of Soil Moisture Content on Stability of Shallow and Surface Landslide
作者:
杨永红1, 刘淑珍2, 王成华2
1. 成都理工大学 地质灾害防治与地质环境保护国家专业实验室, 成都 610059;
2. 中国科学院 成都山地灾害与环境研究所, 成都 610041
Author(s):
YANG Yong-hong1, LIU Shu-zhen2, WANG Cheng-hua2
1. National Special Laboratory of Geological Hazards and Geo-environment Protection, Chengdu University, Chengdu 610059;
2. Chengdu Mountain Hazards and Environment Institute of Chinese Academy of Sciences, Chengdu 610041, China
关键词:
含水量; 非饱和土; 抗剪强度; 植被护坡
Keywords:
water content; unsaturated soil; shear strength; vegetation maintaining slope stability
分类号:
P642.22
摘要:
通过对裸地和桉树林地两种土壤在不同土壤含水量、不同深度的非饱和土的直剪试验，研究了含水量变化对提高边坡稳定性的影响。结果表明，随着含水量的增加，非饱和土的黏聚力和内摩擦角均减小，黏聚力有较大变化而内摩擦角变化较小；植被水文作用能有效的减少土壤含水量，具有提高非饱和土抗剪强度的作用，从而能提高边坡稳定性和防治坡面水土流失。
Abstract:
It is analyzed that the impacts of soil moisture content on stability of landslide through direct shearing tests for unsaturated soil of various vegetation types of bare land and eucalyptus land,different soil moisture contents and different-depth unsaturated soil.The results show that the cohesion of unsaturated soil changes greatly,and the friction angle changes a little with soil moisture content.It is also shown that vegetation hydrological action can decrease soil moisture content,improve shear strength of unsaturated soil,which therefore provides a basis that vegetation can improve stability of landslide,prevention and control of soil and water loss on slopes.

参考文献/References:

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备注/Memo

收稿日期:2006-6-5。
基金项目:重大基础项目前期研究（2004CCAO3600）
作者简介:杨永红（1973- ），男，湖南娄底人，博士后，主要从事地质灾害防治研究。

更新日期/Last Update: 1900-01-01