植物根系固土力学机制模型

由于在边坡加固、生态环境保护等方面具有很多优越性，植物固土护坡技术近年来广泛应用于固土护坡工程中。植物固土护坡的力学效应主要体现在植物的根系上，包括植物浅根将岩土体变成加筋复合材料的加筋作用，以及深根将浅层岩土体风化带锚固到深层稳定岩土上的锚固作用。为了揭示并评价植物固土护坡的力学效应，需要具有实际应用价值的根系固土力学机制模型。本研究在分析植物根系固土力学机理的基础上，探讨了3个植物根系固土力学机制模型：Wu氏模型、能量法模型和纤维束模型的应用条件、模型的优缺点、适用范围及其环境适应性等，并展望了植物根系固土力学模型发展的趋势和方向，从模型角度深化植物根系固土力学机制理论研究，为全面揭示植物护坡的力学机理提供理论基础，为水土保持工程植物措施提供科学依据和理论指导。

Review on the Models of Mechanical Mechanism of Soil Reinforcement by Plant Roots

Because of advantages in stabilizing slopes and protecting ecology and environment,soil reinforcement and slope protection by plants are widely used in slope protection measures.The mechanical effects of soil reinforcement and slope protection by plants are mainly reflect on roots,including reinforcing effects of shallow roots and anchoring effects of deep roots.So models of root reinforcement are basic and important for revealing the mechanism of slope protection by plants.On the basis of analyzing the mechanism of root reinforcement,three models of root reinforcement：Wu ＇ s model,energy approach model and fiber bundle model were discussed,including preconditions,advantages,disadvantages,and applications of the models.Finally,the direction and the development of root reinforcement model in the future were predicted.These models were theoretical promotion of mechanical mechanism of root reinforcement.They can provide basic theory for slope protection by plants and scientific guide for slope protection with vegetation measures.