衡阳某项目边坡稳定性分析与支护设计

The stability analysis and supporting design of a slope in Hengyang

以衡阳某房地产项目的永久性边坡为研究案例,探讨红层软岩边坡的稳定性影响因素、破坏模式、支护方法。分别采用赤平投影的定性分析方法、圆弧滑动与平面滑动下定量分析的方法对边坡稳定性进行了综合判断,得出结论:边坡存在楔形岩块,易发生崩塌及小范围滑动,在暴雨工况下不稳定。为加固边坡,该项目采用了锚索格构梁的支护设计体系,该方法被证明在同类型的边坡支护中效果较好。

Taking the longterm engineering slope of a real estate project in Hengyang as a case study,discussing the stability factors,failure modes and support methods of the red soft rock slope. In this paper,the qualitative analysis method of stereographic projection and the quantitative analysis method of arc sliding and plane sliding are used to comprehensively judge the slope stability. It is concluded that the slope has wedge-shaped rocks,which is prone to collapse and small-scale sliding,and is unstable under heavy rain conditions. In order to reinforce the slope,a supporting design scheme of the prestressed anchor-cable and lattice beam is used in the project,this method has proved to be better in the same type of slope retaining.