（中铁十八局集团有限公司， 天津 300222 ）

［摘要］处于季节性严寒冻土地区的通灌铁路隧道施工后，在冬季排水沟冻凝造成100多m隧道结成厚冰，通过观测和研究，提出并在隧道侧下部开设平行泄水洞，以间隔横洞与水沟连通，解决了已施工隧道深度冻冰问题。

［关键词］季节性冻土； 铁路隧道； 泄水洞； 深度冻冰

中图分类号： U455.411 文献标识码： A文章编号： 1002-848X(2015)S2-0085-05

作者简介：董利民，学士，高级工程师， Email：sbjxcb@163.com。 

Research of the solution of seasonal cold permafrost tunnel construction technology of frozen depth

Dong Limin

(China Railway 18 Bureau Group Co., Ltd., Tianjin 300222, China)

Abstract： After Tongguan Railway Tunnel located in the region with seasonal severe-cold frozen earth, has been executed, water over 100m long in the tunnel froze to be thick ice in winter because of water-discharging ditch being frozen. By observing and studying, it is raised and executed to make parallel water-discharging hole at the side-lower part of the tunnel to space cross hole and water ditch, which solves the problem on deep frozen ice of executed tunnel.

Keywords： seasonal frozen earth; railway tunnel; water-discharging hole; deep frozen ice