Mechanical analysis of interaction between plant roots and rock and soil mass in slope vegetation  

作　　者：言志信 宋云 江平 王后裕 

机构地区：[1]Key Laboratory of Mechanics on Disaster and Environment in Western China (Lanzhou University), Ministry of Education [2]School of Civil Engineering and Mechanics, Lanzhou University [3]College of Civil Engineering and Mechanics, Central South University of Forestry and Technology [4]Air Force Engineering Design & Research Bureau

出　　处：《Applied Mathematics and Mechanics(English Edition)》2010年第5期617-622,共6页应用数学和力学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China (No. 10672191);the Specialized Research Fund for the Doctoral Program of Higher Education (No. 20090211110016);the Natural Science Foundation of Gansu Province of China (No. 096RJZA048)

摘　　要：With the help of plant roots, slope vegetation makes the slope soil mass become a composite material of soil and roots, and thus enhances shear strength of the slope soil mass and stability of the slope. However, the related studies at present are still qualitative. In this paper, quantitative analysis of the interaction between roots and soil mass are made. By the analysis of the interaction between herbaceous plant roots including lateral roots of woody plants and rock and soil mass, a mechanical model of the interaction between frictional roots and soil is established, and its correctness is shown. A mechanical model of the interaction between anchorage root, namely, woody plant taproot, and soil is also established. The establishment of the models provides a useful means in quantitative analysis of the interaction between plant roots and soil, and has practical values.With the help of plant roots, slope vegetation makes the slope soil mass become a composite material of soil and roots, and thus enhances shear strength of the slope soil mass and stability of the slope. However, the related studies at present are still qualitative. In this paper, quantitative analysis of the interaction between roots and soil mass are made. By the analysis of the interaction between herbaceous plant roots including lateral roots of woody plants and rock and soil mass, a mechanical model of the interaction between frictional roots and soil is established, and its correctness is shown. A mechanical model of the interaction between anchorage root, namely, woody plant taproot, and soil is also established. The establishment of the models provides a useful means in quantitative analysis of the interaction between plant roots and soil, and has practical values.

关 键 词：slope vegetation vegetation for slope protection mechanical model frictional root anchorage root 

分 类 号：O313.5[理学—一般力学与力学基础]