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

• 来源期刊: 山地科学学报(英文版)
• 学科: 工学
• 关键词: 抗剪强度试验 蒋家沟 银合欢 原状土 云南省 中国 土壤样品 内摩擦角
• 年，卷（期）: 2010,（4）
• 页码范围: 386-395
• 页数: 10页
• 分类号: TU411.7 P642.23
• 语种: 英文

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.