概述本文论述了地层冻结法的一个新的应用——先对竖井与两条已建成的盾构隧道之间的地层进行三维冻结,然后开挖竖井及竖井与盾构隧道之间的土层,最后完成排水泵站。冻结区域不但是三维的,而且其施工工序也非常复杂。因此,很难估计隧道底层下面粘土层的冻胀影响。对此,采用了系统的现场 Overview This article discusses a new application of the formation freezing method - three-dimensional freezing of the formation between the shaft and two completed shield tunnels, and then excavation of the soil layer between the shaft and the shaft and the shield tunnel, Drainage pumping station finally completed. The frozen area is not only three-dimensional, but also the construction process is very complicated. Therefore, it is difficult to estimate the frost heaving effect of the clay layer under the tunnel. In this regard, the system used the site