植被护坡对河岸坡体稳定性影响及机理研究  

Study on the Influence and Mechanism of Vegetation Slope Protection on the Stability of Riverbank Slopes

作　　者：刘萍 刘根祥 LIU Ping;LIU Genxiang(Jianhu County Development Zone Water Conservancy Management Service Station,Jianhu 224700,China;Jianhu County Water Resources Planning Office,Jianhu 224700,China)

机构地区：[1]建湖县开发区水利管理服务站,江苏建湖224700 [2]建湖县水利规划办公室,江苏建湖224700

出　　处：《云南水力发电》2025年第1期31-33,共3页Yunnan Water Power

摘　　要：香根草是一种极好的护坡植物,其平均抗拉强度为75 MPa(即约为软钢强度的1/6),被称为边坡表层的“活土钉”。因此研究香根草的护坡效果具有重要工程意义。文章以广东某河岸边坡治理工程为例,采用有限元程序PLAXIS和强度折减法,探讨了香根草的间距、种植角度和根系深度对边坡稳定性的影响,探讨了其加固机理。研究结果表明,由于植物根系间的锚固作用,能够增强植物根系与土壤间的凝聚力,能够较好地提高边坡稳定性,值得推广应用。Vetiver is an excellent slope protection plant with an average tensile strength of 75 MPa(about one sixth of the strength of soft steel),known as the"living soil nail"on the surface of slopes.Therefore,studying the slope protection effect of vetiver grass has important engineering significance.Taking a riverbank slope treatment project in Guangdong as an example,this paper uses the finite element program PLAXIS and strength reduction method to explore the effects of the spacing,planting angle,and root depth of vetiver on slope stability,and explores its reinforcement mechanism.The research results indicate that due to the anchoring effect between plant roots,the cohesion between plant roots and soil can be enhanced,which can effectively improve slope stability and is worthy of promotion and application.

关 键 词：香根草 边坡稳定 植被护坡 

分 类 号：TV861[水利工程—水利水电工程]