软土地区某大面积基坑工程险情分析与处理

Analysis and treatment for dangerous situations of a large foundation pit in soft soil areas

以上海市某大面积住宅小区地下车库基坑工程发生险情的预警处理为背景,对深厚软土地区基坑变形特征及险情原因进行了分析探讨,并提出针对性的处理意见,最后对抢险的经验教训进行了总结,旨在为类似基坑工程的支护设计施工、事故预防和预警处理提供有益的参考。

A foundation pit project of a large residential underground garage in Shanghai as well as the warning treatments for its dangerous situations is taken as an example. The deformation characteristics and danger causes of the excavation in deep and soft soil areas are analyzed and discussed, and targeted suggestion is proposed. Finally, the emergency experience and lessons were summarized. It will provide beneficial reference for the design and construction of supporting structures for foundation pits, accident prevention and warning settlement of similar projects.