基于根系形态的植物根系力学与固土护坡作用机理  

Morphology-based Plant Root Mechanics and Function Mechanism for Slope Stabilization

作　　者：吴鹏[1] 谢朋成[1] 宋文龙[1] 曹军[1] 

机构地区：[1]东北林业大学,哈尔滨150040

出　　处：《东北林业大学学报》2014年第5期139-142,共4页Journal of Northeast Forestry University

基　　金：黑龙江省自然科学基金(C201337);国家自然科学基金面上项目(31270757);中央高校基本科研业务费专项资金(Z02068)

摘　　要：为从力学机制上研究植物根系的固土护坡作用,采用室内剪切试验方法,对不同根系分布形态的植物根系固土护坡的有关规律进行研究。结果表明:与素土体相比,含根系土体增加了土体的抗剪切强度,在强度峰值点对应的应变变大,即在土体被剪破前,含根系土体能够承受更大的变形;不同的根系分布形态,对根系固土强度和边坡稳定性的影响不同。By an indoor shear testing method, the experiment was conducted to study the regularities of slope stabilizations of plant roots with different distribution states and investigate the slope stabilization of plant roots in mechanics. Compared with undisturbed soil, the root-soil composite system improves shear bond strength and enlarging strains at the top of shear strength. The root-soil composite system can sustain larger changes before the soil is sheared. Different root distribution states have distinct influences on soil stabilizing strength and slope stabilization.

关 键 词：植物根系 固土护坡 根系形态 应力 应变 剪切强度 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]