以上海市地铁工程建设为例,就采用盾构法施工区间隧道时周围环境的调查及其控制地层位移已设定的要求,讨论了监控设计的要点。针对环境土体变形位移不同的允许限值,提出了制定有关土体施工变形控制的指标体系,谋求实时调整盾构各设计、施工参数以保持土体稳定,并通过对变形的控制与防治,维护施工环境的安全。 Taking the construction of subway project in Shanghai as an example, the survey of the surrounding environment and the control of formation displacement that has been set by the shield tunneling method are discussed. The main points of the monitoring design are discussed. In view of the different allowable limits of deformation and displacement of soils, this paper puts forward the establishment of an index system about the deformation control of soils, and seeks to adjust the design and construction parameters of the shield in real time so as to keep the stability of the soil. Through the control and prevention of deformation, Safeguard the construction environment.