南通市某地铁车站深基坑施工案例分析

Case Study on Deep Excavation Construction of a Station in Water-rich Sand Layer Area

南通市某地铁车站基坑位于富水砂层地区,周边环境复杂,采用顺作法施工。针对局部隔水层缺失以及存在承压水突涌风险的情况,采取相应的地下水处理措施。结合时空效应理论对施工流程进行优化,并对基坑变形进行控制,以减小对周边构筑物的影响。在施工全过程中严密监测,确保整个工程施工质量和安全。

The excavation of a subway station in Nantong is located in the water-rich sand layer area and the surrounding environment is complex.Combined with the time-spatial effect,the construction process was optimized.Besides,the groundwater treatment was carried out due to the lack of local waterproof layer and the risk of artesian water outburst.The influence on the surrounding structures was reduced by controlling the deformation of the excavation.Tight monitoring was carried out during the process to ensure the quality and safety of the entire construction.