端头井冻结工程拔管技术

Pipe Drawing Technology for Ground Freezing Engineering of End Shaft

冻结管拔除是端头井冻结工程施工中的重要环节;因其工艺复杂、不可预见因素多、施工风险大,而成为该类工程的关键工序。结合工程实际,介绍了拔管准备工作内容和竖直孔拔管、水平孔拔管技术要点。

The drawing of the freezing pipe would be an important link in the construction of the end shaft freezing engineering.Due to the complicated technique,many unpredictable factors and high construction risk,the drawing of the freezing pipe would be the key procedure of the engineering.In combination with the actual engineering,the paper introduced the preparation work contents of the freezing pipe drawing and the technical points of the vertical pipe drawing and horizontal pipe drawing.