Ultralow-temperature intelligent freezing water sealing system in stratum excavation

The ultralow-temperature intelligent freezing water sealing system comprises a plurality of freezers communicated with a liquid nitrogen tank, the freezers are installed in a soil body near an underground water inrush point, and a temperature control unit is installed between the freezers and the liquid nitrogen tank for temperature monitoring. And the numerical control module is used for intelligently starting and stopping the freezing system. The purposes of rapid water sealing and automatic energy-saving freezing in the early stage of stratum inrush are achieved. The method is suitable for emergency rescue work of small-amplitude groundwater inrush in various stratum freezing projects, or solves the water leakage problem of other underground projects. 本发明公开了一种地层开挖中的超低温智能冻结封水系统，装置包括与液氮罐连通的多个冻结器，各所述冻结器安装至地下水突涌点位附近土体内，冻结器与液氮罐之间安装有控温单元进行温度监控，并利用数控模块进行冻结系统智能化启闭。本发明实现了地层突涌初期的快速封水以及自动节能冻结的目的。本发明适用于各类地层冻结工程中地下水小幅度突涌的抢险工作，或解决其它地下工程的渗漏水问题。