以内蒙古集包铁路某隧道渗漏水整治问题为研究对象，对工程概况进行介绍，并从隧道病害分类、产生原因、整治方法、整治效果等方面对高寒地区运营铁路隧道渗漏水及冻害整治技术进行阐述与分析，主要应采用注浆与加热保温相结合的综合整治技术。实践证明，所采用的整治技术在高寒地区渗漏水整治中实施效果良好，有较好的施工进度和经济性。

An operating tunnel on Ji’ningBaotou railway in Inner Mongolia has water leakage defect. In the paper, a brief introduction is made to the tunnel, the water leakage defect and the freezing defect of the tunnel are expounded in terms of defect classification, defect causes, defect treatment methods and defect treatment effect. Comprehensive defect treatment measures, including grouting and heating and thermal insulation measures, are taken for the tunnel. The engineering practice shows that the treatment technologies adopted have achieved good construction progress, good economy and good effect in the treatment of the water leakage in plateau and extremely cold region.