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Journal of Mountain Science

, Volume 7, Issue 4, pp 386–395 | Cite as

Experimental analysis of shear strength of undisturbed soil in leucaena forest in Jiangjia Ravine, Yunnan, China

  • Zhen Jiao
  • Daojie WangEmail author
  • Hong Xie
  • Jinshan Zhang
  • Linghui Guo
Article

Abstract

Five leucaena trees of similar age were chosen in Jiangjia Ravine of Dongchuan, Yunnan Province, China, near which the soil samples were collected by digging profiles 2m in depth and 1m in width. In each section, soil samples at different depths were taken for direct shear experiments to determine the root amount and mechanical composition. It is found that the cohesion and internal friction angle of the undisturbed soil are related to the root amount, depth, clay content and breccias content. Cohesion correlates negatively with root content, a finding that differs from that of other researchers. In addition, internal friction angle correlates positively with all these factors.

Keywords

Jiangjia Ravine Leucaena Undisturbed soil Shear strength Impact factors 

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Copyright information

© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Zhen Jiao
    • 1
    • 2
    • 3
  • Daojie Wang
    • 1
    • 3
    Email author
  • Hong Xie
    • 1
    • 3
  • Jinshan Zhang
    • 1
    • 3
  • Linghui Guo
    • 1
    • 2
    • 3
  1. 1.Key Laboratory of Mountain Hazards and earth surface processesChinese Academy of SciencesChengduChina
  2. 2.Graduate University of Chinese Academy of SciencesBeijingChina
  3. 3.Institute of Mountain Hazards and EnvironmentChinese Academy of ScienceChengduChina

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