软土地基堤防失稳边坡加固方案分析研究

Analysis and Research on Reinforcement Scheme of Instability Dike Slope in Soft Soil Foundation

软土地基堤防边坡失稳事故时有发生,滑坡加固方案值得工程界深入探讨。以黄浦江某段失稳江堤为例,在分析了滑坡过程及原因的基础上,拟定了几种滑坡处理方案。最终选定了抗滑桩与墙前镇脚组合的方案,待滑坡段基本稳定、土体强度逐渐恢复后进行了加固处理,降低了滑坡抢险的工程造价,取得了预期效果。通过此次滑坡加固方案的分析研究,从勘察、设计、施工方面总结出一些结论,可供类似工程参考。

Unstable accidents of soft soil foundation dike slope occur frequently. The reinforcement scheme of landslide is worthy of further discussion in engineering field. Taking the unstable dike in a section of Huangpu River as an example and on the basis of analyzing the landslide process and causes,several landslide treatment schemes are proposed. Finally, the scheme of combining the anti-slide pile and wall-front-foot method is selected. The reinforcement treatment is not carried out until the landslide section is basically stabilized and the soil strength is gradually restored. This method can reduce the engineering cost of landslide emergency, and achieve the expected effect. Some conclusions of survey,design and construction are achieved from the analysis and study of landslide reinforcement schemes,which can be referred for the similar projects.