| Impacts of Soil Moisture Content and Vegetation on Shear Strength of Unsaturated Soil |
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| 作者姓名： | YANGYong-hong ZHANGJian-guo ZHANGJian-hui LIUShu-zhe WANGCheng-hua XIAOQing-hua |
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| 作者单位： | [1]SchoolofCivilEngineering,SouthwestJiaotongUniversity,Chengdu610031,Sichuan,China [2]InstituteofMountainHazardsandEnvironment,ChineseAcademyofSciences,Chengdu610041,Sichuan,China |
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| 基金项目： | SupportedbytheFrontiersItemofKnowledgeInnovationProjectofInstituteofMountainHazardsandEnvironment,CAS(Y1010) |
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| 摘 要： | It is analyzed that the impacts of vegetation type and soil moisture content on shear strength of unsaturated soil through direct shearing tests for various vegetation types, 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, h is also shown that vegetation can improve shear strength of unsaturated soil, which therefore provides a basis that vegetation can reinforce soil and protect slopes.
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| 关 键 词： | 不饱和土壤 水含量 植被类型 斜坡保护 土壤压力 |
| 收稿时间： | 13 January 2005 |
Impacts of soil moisture content and vegetation on shear strength of unsaturated soil |
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| YANGYong-hong ZHANGJian-guo ZHANGJian-hui LIUShu-zhe WANGCheng-hua XIAOQing-hua.Impacts of Soil Moisture Content and Vegetation on Shear Strength of Unsaturated Soil[J].Wuhan University Journal of Natural Sciences,2005,10(4):682-688. |
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| Authors: | Yang Yong-hong Zhang Jian-guo Zhang Jian-hui Liu Shu-zhen Wang Cheng-hua Xiao Qing-hua |
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| Institution: | (1) School of Civil Engineering, Southwest Jiaotong University, 610031 Chengdu Sichuan, China;(2) Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, 610041 Chengdu Sichuan, China |
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| Abstract: | It is analyzed that the impacts of vegetation type and soil moisture content on shear strength of unsaturated soil through direct shearing tests for various vegetation types, 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 can improve shear strength of unsaturated soil, which therefore provides a basis that vegetation can reinforce soil and protect slopes. |
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| Keywords: | water content unsaturated soil vegetation shear strengh |
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