本文分析了盾构法施工引起地面沉陷的因素及防止措施,作者用弹塑性计算程序对上海地铁试验段的地表沉陷进行了前期沉降的预测研究。并综合有限元分析结果和现场实测资料,提出上海地铁地表沉陷的估算实用公式,供施工参考,以控制地表沉陷。 This paper analyzes the factors and prevention measures of ground subsidence caused by shield construction. The author used the elasto-plastic calculation program to predict the subsidence of the surface subsidence of Shanghai Metro test section. Combined with the results of finite element analysis and field measurement data, a practical formula for estimating the surface subsidence of Shanghai Metro is proposed for construction reference to control surface subsidence.