大直径盾构下穿地铁隧道施工变形控制技术分析

Deformation Control Technology of Large Diameter Shield under Subway Tunnel

随着城市地下轨道交通网络的不断完善,大直径盾构下穿逐渐成为地铁隧道施工的主要方法。盾构下穿时,若未有效控制变形,则会影响地铁隧道运行的安全性。文中以某地铁隧道工程为研究对象,分析了切口压力设定、推力与推进速度控制技术等,解决大直径盾构下穿地铁隧道施工变形问题,为类似工程施工提供参考。

With the continuous improvement of urban underground rail transit network,large-diameter shield tunnel has gradually become the main method of subway tunnel construction.When the shield tunnel passes through,if the subway tunnel is not reasonably deformed,it will affect the safety of subway tunnel operation.To this end,taking a subway tunnel project as the research object,specifically analyzing the incision pressure setting,thrust and propulsion speed control technology,to solve the deformation problem of large diameter shield tunnel through the subway tunnel construction,to provide reference for similar engineering construction in the future.