冻结井开挖初期出水原因分析

Analysis of Water Irruption Reasons at Beginning of Freezing Shaft Excavation

对冻结井出水情况进行了介绍,并对其出水原因进行了分析,分析表明:冻结孔偏斜和地下水位的频繁变化使冻结交圈困难,从而形成了冻结壁未冻窗口,是冻结井出水的主要原因。在此基础上提出了相应的处理措施,为冻结井新井建设提供参考。

This paper introduces how and why underground water comes out from freezing shaft.The analysis shows that freezing holes＇ deflection and groundwater level frequent change makes freezing circle formation difficulty,the major reasons of water outlet in freezing shaft are that a window forms in freezing wall.Furthermore,the paper puts forward corresponding measures to solve this problem,which will provide reference for new freezing shaft construction.