大直径泥水盾构近距离穿越运营地铁隧道的施工控制技术

Construction Control Technology of Large Diameter Slurry Shield Closely Crossing Metro Tunnel in Operation

结合上海大直径泥水平衡盾构首次在承压水砂性地层中近距离穿越运营地铁隧道的工程实例,介绍了近距离穿越过程中被穿越隧道的沉降变化规律,分析了各施工参数对隧道变形的影响,总结了工程中出现的问题及应对措施,供同类工程参考。

Combined with the engineering case of large diameter slurry shield closely crossing metro tunnel under the sandy layer with artesian water,it introduces the settlement law of the existing tunnel under which a new large tunnel goes through with short distance,analyzes the influence of construction parameters on tunnel deformation,and summarizes the difficulties and measures.