高原高寒高速铁路特长隧道防冻胀害施工技术探讨

摘要

Plateau alpine high speed railway tunnel antifreeze expansion damage construction technology is a topic for research for a long time.Combined with the Lan-Xin Railway Dabanshan Tunnel construction practice,this article discusses mechanism and the prevention measures of alpine area tunnel frozen expansion damage especially waterproof,and discharge and the insulation measures and the construction technology requirements.%高原高寒高速铁路隧道防冻胀害施工技术一直是隧道工程界研究的课题,结合兰新铁路大坂山隧道施工实例,就高寒地区隧道冻胀害产生的机理及预防措施进行了探讨,尤其侧重于防水、泄水、保温措施及施工工艺要求几个方面。