浅层滑坡生物治理中的乔木根系抗拉实验研究  

A Study of Tensile Strength Tests of Arborous Species Root System in Forest Engineering Technique of Shallow Landslide

作　　者：杨永红[1] 刘淑珍[2] 王成华[2] 肖清华[1] 

机构地区：[1]西南交通大学土木工程学院,成都610031 [2]中国科学院成都山地灾害与环境研究所,成都610041

出　　处：《水土保持研究》2007年第1期138-140,共3页Research of Soil and Water Conservation

基　　金：重大基础项目前期研究(2004CCAO3600)

摘　　要：通过对野外选取的合欢根系的抗拉试验,及在合欢林地的抗拉拔实验,研究了根系的最大抗拉强度和抗拉拔强度。结果表明,根系最大抗拉强度与根系直径成指数函数关系,最大抗拉力与根系直径成正相关关系,根系抗拉拔力可以和根系直径、根长、土壤容重建立回归方程,从而可以求得根系与周围土体之间的静摩擦系数。A study was conducted, through tensile tests of Albazzia roots culled from the fields as well as anti-drawing strength of these root systems in the Albazzia lands, in an effort to give insights into the maximum tensile strength and anti-drawing strength of the root systems. Results indicated that the maximum tensile strength of root system is in an exponential relation with the diameter of root system while the maximum tensile strength is positively correlative with the diameter of root system. Anti-drawing force of root system together with root diameter, length, and soil hulk density are folded into a regression equation in an attempt to figure out the static friction coefficient between root system and its ambient soil.

关 键 词：根系 抗拉强度 抗拉拔强度 抗拉力 

分 类 号：TU432[建筑科学—岩土工程] P642.22[建筑科学—土工工程]