冻结法在川气东送管道工程抢修中的应用

Application of Freezing Method to Make Urgent Repair on the Pipeline Engineering of Natural Gas from Sichuan to the East

川气东送管道工程武汉主干线采用盾构法穿越长江。在盾构到达接收井后,产生隧道被淹,盾构淹没在土体中的险情。叙述了抢修工程采用冻结法对土体进行加固的要点。在施工过程中,对冻结盐水温度、冻土温度等进行实时监测,合理施工,成功解决了抢修中的难点。

With the background of the pipeline engineering of natural gas from Sichuan to the East in this paper,its main pipeline in Wuhan is adopting shield method to cross the Yangtze River.The dangerous case was when the shield arriving at the receive well,the tunnel inundated and the shield submerged in the soil body.And the freezing method applied in repairing project is presented on the key points of soil body strengthening.During the construction period,there is real time monitoring on frozen salt water temperature and frozen soil temperature with reasonable construction to solve the difficulties successfully.