摘要
植被护坡借助植物根系使边坡土体成为土与根的复合材料,从而明显提高边坡土体的抗剪强度,增大边坡的安全稳定性.但是,目前的相关研究仍然停留在定性地分析上.文中试图在定量分析根和岩土相互作用方面进行探索性的工作,通过对草本植物的根系包括木本植物的侧根系与岩土体相互作用的分析,建立摩擦型根-土力学作用模型,并实验验证模型的正确性;对锚固型根亦即木本植物主根-土的作用也建立相互作用的力学模型.两类力学模型的建立为定量地分析植物根系与土体的相互关系提供了重要的理论指导,具有一定应用价值.
With the help of plant roots,slope vegetation renders the slope soil mass a composite material of soil and roots,thereby conspicuously enhances the shear strength of slope soil mass and the stability of slope.Therefore,slope vegetation is always an optimal choice for engineers.Nevertheless,present correlative studies still remain at the stage of qualitative analysis.Some explorations in quantitatively analyzing the interaction between roots and soil mass were achieved.Through analyzing 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 was established,and its correctness was verified.Meanwhile,a mechanical model of the interaction between anchorage root,namely,woody plant taproot,and soil was also established.The models provide a significant theoretical guidance for quantitatively analyzing the interaction between plant roots and soil and are of certain application value.
出处
《应用数学和力学》
CSCD
北大核心
2010年第5期585-590,共6页
Applied Mathematics and Mechanics
基金
国家自然科学基金资助项目(10672191)
高等学校博士学科点专项科研基金资助项目(20090211110016)
甘肃省自然科学基金计划资助项目(096RJZA048)
关键词
植被护坡
植物固坡
力学模型
摩擦型根
锚固型根
slope vegetation
vegetation for slope protection
mechanical model
frictional root
anchorage root
