U型冻结法在大直径泥水盾构接收中的应用研究

Research on the Application of U-Shaped Freezing Method in the Receiving of Large-Diameter Slurry Shields

本文通过对常用盐水冻结形式与大直径盾构两种接收方式在接收施工风险两阶段的适用性研究,对比了不同冻结形式在不同接收方式下的优缺点,提出了一种新的U型冻结形式并阐述了其在大直径盾构接收中的应用特点,指出了U型冻结在大直径盾构接收应用中的有效性和适用性,并且在上海轨道交通市域线机场联络线3标项目14m大直径泥水气平衡盾构接收中进行了成功应用。

This article studies the applicability of commonly used salt water freezing form and two receiving methods in the two stages of large-diameter shield receiving construction risks. It compares the advantages and disadvantages of different freezing forms under different reception methods, proposes a new U-shaped freezing Form and expounds its application characteristics in large-diameter shield receiving, and points out its effectiveness and applicability. It has been successfully applied in the reception of 14 m diameter slurry shield in the third section of Shanghai Rail Transit Municipal Line Airport Connection Line Project.