上海地铁车站深基坑工程地面沉降防治实例分析

摘要

The decompression and discharging of underground in deep foundation pit construction in soft soil area are easy to cause the land subsidence and other environmental geological problems. Using the deep foundation pit engineering in Shanghai subway station, this paper, analysis the land subsidence dynamic characteristics after setting the waterproof curtain and artificial recharge in shal ow aquifer and other methods, and discusses the watertightness and laying depth of pit support structure, and studies the technical requirements of artificial recharge and information monitoring and their integrated applications. The above mentioned methods are to the benefit of preventing and control ing the land subsidence in deep foundation pit engineering.%　　软土地区深基坑工程施工中对地下水的降压与疏排易引发地面沉降等环境地质问题。结合上海某地铁车站深基坑降水工程，分析了设置隔水帷幕及进行浅部含水层人工回灌等措施后的地面沉降动态特征，探讨了基坑围护结构的止水性与布设深度、人工回灌与信息化监测等措施的技术要求与综合应用，以助于深基坑工程地面沉降防治。