Experimental Analysis of Shear Strength of Undisturbed Soil in Leucaena Forest in Jiangjia Ravine,Yunnan,China  

作　　者：JIAO Zhen 

机构地区：[1]Key Laboratory of Mountain Hazards and earth surfaceprocesses, ChineseAcademy of Sciences, Chengdu 610041, China [2]Graduate University of ChineseAcademy of Sciences, Beijing I ooo49, China [3]Institute of Mountain Hazards and Environment, Chinese Academy of Science, Chengdu 61oo41, China

出　　处：《Journal of Mountain Science》2010年第4期386-395,共10页山地科学学报（英文）

基　　金：supported by the National Natural Science Foundation of China (Grant No.40771025);National Key Basic Research and Development Program (Grant No.2008CB425802);the Chinese Academy of Sciences important direction for knowledge engineering projects(Grant No.KZCX2-YW-332)

摘　　要：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.

关 键 词：Jiangjia Ravine LEUCAENA Undisturbedsoil Shear strength Impact factors 

分 类 号：TU411.7[建筑科学—岩土工程] P642.23[建筑科学—土工工程]