植物根-土复合体原位剪切试验研究现状及其进展  

Present Status and Progress of In-Situ Shearing Test for Root-Soil Composite System

作　　者：卢海静[1] 王磊[1] 翟国良[1] 胡夏嵩[1,2] 余芹芹[1] 乔娜[1] 李国荣[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：《中国水土保持》2013年第7期42-46,77,共5页Soil and Water Conservation in China

基　　金：国家自然科学基金资助项目(41162010);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);国家国际科技合作计划资助项目(2011DFG93160)

摘　　要：为了进一步评价植物根系增强土体抗剪强度的作用及其变化规律,结合国内外学者在此领域所开展的研究,系统地阐述了根-土复合体的结构、性能及草本、灌木植物根系增强边坡土体稳定性的贡献,讨论了原位剪切试验对于评价植物根系增强边坡稳定性贡献的优势;并初步探讨了根-土复合体原位剪切试验的发展方向,即对于坡体不同深度条件下根-土复合体中根系与土体之间的摩擦力大小以及土体密度、含水量等物理性指标对根系提高土体强度的影响程度尚需进一步研究;对于根-土复合体原位剪切试验装置中相关构件参数如剪切盒尺寸等的设计,以及所反映的边坡土体抗剪强度大小等方面尚需做进一步探讨。In order to further evaluate the shearing resistance of soil enhanced by plant roots and its variation regulations,combining with the study conducted by scholars both at home and abroad in this field,the paper systematically elaborated the structure and function of root-soil composite system and the contribution of plant roots of herbs and shrubs to slope stability. It discussed the advantages of the in-situ shear test for evaluating the contribution of plant roots in slope stability and preliminarily discussed the development orientation of the in-situ shear test,i. e. the friction between roots and soil of the root-soil composite system under the different conditions of slope depths and the physical indicators of soil bulk density and moisture content to affect improving soil strength still need further study; the aspects of related component parameters design of the test device such as the size of the shear box and the slope shearing resistance showed by the test remain to be further discussed.

关 键 词：根-土复合体 草本 灌木 原位剪切 试验装置 研究现状 研究进展 

分 类 号：TU411[建筑科学—岩土工程]