典型切坡挖方诱滑体的支挡措施及数值模拟

Supporting Measures and Numerical Simulation of Typical Slope-Cutting Lubricating Bodies

陕南某公路边坡因工程活动切坡挖方修路造成坡体变形失稳,需对欠稳定坡体进行应急治理工程设计,同时分析影响临空坡体失稳的因素并总结潜在滑坡的形成机理。对切坡体稳定性进行了定量评价,提出了抗滑桩+重力式挡墙+排水的治理方案,并用数值模拟对比分析了处治前后坡体的重分布应力应变及稳定性变化,结果表明治理设计对潜在滑坡的稳定性有较好的效果。

The slope of a highway in southern Shaanxi was deformed and destabilized due to engineering activities—cutting and excavation for road repair.This paper conducts emergency treatment engineering design for the under-stable slope,analyzes the factors affecting the instability of the open-air slope and summarizes formation mechanism of the potential landslides.The stability of the cutting slope body was quantitatively evaluated,and the treatment plan of anti-slide pile+gravity retaining wall+drainage project was proposed,and the redistributed stress,strain and stability changes of the slope body before and after treatment were compared and analyzed by numerical simulation.The results show that the governance design has a good effect on the stability of potential landslides.