带有超深坑中坑的软土基坑挖土施工技术

On Excavation Construction Technique of Soft Soil Foundation Pit with Super Deep Foundation "Pit-in-pit"

通过基坑工程实例,介绍带有超深坑中坑的复杂软土基坑的挖土施工技术。根据该基坑的特点,首先叙述挖土的顺序、方法、原则,然后叙述施工工艺流程、施工机械选择,最后说明挖土施工要点及经验教训。

Through a case of foundation pit, the excavation construction technique of complex soft soil foundation pit with super deep foundation 'pit-in-pit' was introduced in the paper. According to its features, the sequence, method and principle of excavation were mentioned firstly. Then, the process flow, the mechanical selection were put forward. Finally, the key points and experience and lessons of the excavation construction were summarized by the authors.