台风暴雨工况下植被边坡稳定性影响因素分析

Analysis of Influencing Factors of Vegetation Slope Stability under Typhoon and Rainstorm Conditions

通过梳理现有文献资料,探讨台风暴雨工况下影响边坡失稳的因素,为边坡失稳治理提供参考。经过定性分析得出,内部因素包括边坡所处的地形地貌、地质条件、边坡植被条件;外部因素包括风荷载、雨荷载的作用;种植根系较浅的乔木的土质凸坡,在台风暴雨工况下容易发生滑坡;提出台风暴雨耦合作用对植被边坡作用的示意模型,阐释了台风暴雨导致边坡失稳的机理;并以海南吊罗山为例,分析影响边坡稳定性的因素和治理措施。

By combing the existing literature,the factors affecting slope instability under the condition of typhoon rainstorm are summarized,so as to provide reference for slope instability control.Through qualitative analysis,it is concluded that the internal factors include the topography,geological conditions and vegetation conditions of the slope,while the external factors include wind load and rain load.The soil convex slope of tall trees with shallow roots is prone to landslide under the condition of typhoon rainstorm.A schematic model of the coupling effect of typhoon rainstorm on vegetation slope is proposed and the mechanism of slope instability caused by typhoon rainstorm is explained.The influence factors of slope stability and treatment measures are analyzed with the example of Diao-Luo Mountain in Hainan Province.