Taking the tunnel structure deformation of a subway interval as an example, combining with field monitoring and numerical simulation experiments, analyzed the deformation laws of adjacent subway structure under foundation pit dewatering conditions, discussed the distance of foundation pit and tunnel, the influence of foundation pit water stop curtain depth to tunnel deformation, provided reference for future foundation pit engineering design and subway tunnel safety protection.%以某地铁区间隧道结构变形为例，结合现场监测和数值仿真试验，分析了基坑降水条件下邻近地铁结构的变形规律，探讨了基坑与隧道的间距、基坑止水帷幕深度对隧道变形的影响，为今后基坑工程设计和地铁隧道安全保护提供了参考。
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