液氮冻结法加固在盾构开仓作业中的应用

Application of Liquid Nitrogen Freezing and Reinforcement in Shield Opening Door Operation

在盾构开仓作业中,液氮冻结法加固通过土体加固厚度设计、冻结施工、温度监测等措施,保障施工人员安全和盾构设备使用性能。结果表明液氮冻结法加固地层可为盾构开仓作业提供安全保障,解决地下障碍物导致盾构停滞引起的问题,为类似工程提供参考。

The liquid nitrogen freezing method is used to strengthen the thickness of the shield, the construction, and the temperature monitoring measures to ensure the safety of the construction personnel and the performance of the shield equipment. The results show that the liquid nitrogen freezing method strengthens the stratum to provide safety guarantee for the opening operation of the shield, and solves the problems caused by the blockage caused by the underground obstacles, which provides a valuable reference for similar projects.