植物根系增强土体抗剪强度机理研究进展  

Development of the Mechanism of Plant Roots in Reinforcing Soil Shear Strength

作　　者：李华坦[1] 胡夏嵩[1,2] 赵玉娇[1] 卢海静[1] 李国荣[1] 朱海丽[1] 

机构地区：[1]青海大学地质工程系,青海西宁810016 [2]中国科学院青海盐湖研究所,青海西宁810008

出　　处：《人民黄河》2014年第8期97-100,共4页Yellow River

基　　金：国家自然科学基金资助项目(41162010;41302258);长安大学西部矿产资源与地质工程教育部重点实验室开放基金资助项目(CHD2011SY016);青海省重点科研攻关项目(2003N2134)

摘　　要：结合国内外学者对植物加筋土直接剪切试验和三轴试验的研究成果,分别论述了草本、灌木、乔木等不同类型植物根系在土体中的分布方式,对原状根"土复合体和重塑根"土复合体的直接剪切试验和三轴试验结果,评价植物根系对土体抗剪强度的增强作用,总结植物根系深部锚固、浅层加筋固土和斜向牵引效应3种类型根"土复合体相互作用机理以及植物根系加筋固土的数值模拟研究成果。Based on the domestic and foreign scholars’research achievements on both direct shear tests and triaxial tests of plant roots-reinforced soil,this paper discussed the enhancement effect of different kinds of plant roots such as herbs、shrubs and trees on soil shear strength through direct shear tests and triaxial tests that were conducted on both undisturbed root-soil composite systems and remolded root-soil composite system,and the roots distribution of each plant in soil was different. This paper summarized the deep anchorage,shallow reinforcement of soil and oblique pulling effect of plant roots,different interaction mechanisms of the three root-soil composite systems,and the results of numerical simulation of plant reinforced soil.

关 键 词：植物根系 剪切试验 抗剪强度 数值模拟 

分 类 号：S157.1[农业科学—土壤学]