五节芒和胡枝子的固土护坡力学特性研究

Study on Mechanical Properties of Soil Reinforcement and Slope Stabilization of Miscanthus floridulus and Lespedeza bicolor

[目的]分析植物根系在土壤中的力学性质,证明植物能提高坡面的稳定性。[方法]以胡枝子、五节芒为研究对象,测定植物根系的抗拉强度。[结果]根系的存在确实对土体抗剪强度有所提高;当根系的总长度恒定时,根系粗细是影响抗拉拔力的主要因素。[结论]植物根系可以提高土体的抗剪强度和抗拉拔能力,增强边坡的稳定性。

[Objective]The mechanical properties of plant roots were analyzed in the soil,demonstrating that plants can improve the stability of the slope.[Method]Taking Miscanthus floridulus,Lespedeza bicolor as test object,pull-out strength of plant root was determined.[Result]The presence of roots did improve the shear strength of the soil.When the total length of the root system was constant,the root thickness was the main factor affecting the pull-out resistance.[Conclusion]Plant roots can improve the shear strength and pull-out resistance of the soil and enhance the stability of the slope.