基于高海拔寒区多年冻土隧道的防冻保温技术研究  

Research on Anti-freezing and Thermal Insulation Technology for Permafrost Tunnels in High-altitude Cold Region

作　　者：郑长伟 刘月 Zheng Changwei;Liu Yue(China Railway Construction Bridge Engineering Bureau Group Co.,Ltd.,Tianjin 300457,China)

机构地区：[1]中国铁建大桥工程局集团有限公司,天津市300457

出　　处：《北方交通》2024年第11期85-87,91,共4页Northern Communications

摘　　要：多年冻土区隧道存在诸多冻害。为研究解决高寒高海拔地区隧道冻害问题,文章结合现场调查和相关资料,总结了高海拔寒区多年冻土隧道主要面临的冻害问题,包括隧道渗流水、冻胀、挂冰等,并从隧道保温层防冻设计、隧道防排水设计以及隧道施工技术防冻设计三个方面对寒区隧道冻害的防治措施进行了分析讨论。研究认为,此类问题的严重程度主要取决于环境温度、初始地温、地下水和通风条件。There are many frost damages of tunnels in the permafrost region.In order to study and solve the frost damage problems of tunnels in high-altitude cold region,the main frost damage problems faced by permafrost tunnels in high-altitude cold region are summarized,including tunnel seepage,frost heave,and ice hanging and etc.based on the field investigation and relevant data.The prevention and control measures for frost damages of tunnels in cold region are analyzed and discussed from three aspects like anti-freezing design of tunnel insulation layer,anti-drainage design of tunnel,and anti-freezing design of tunnel construction technology.The research shows that the severity of such problems mainly depends on the environmental temperature,initial ground temperature,groundwater,and ventilation conditions.

关 键 词：多年冻土 隧道冻害 保温 防治措施 

分 类 号：U457[建筑科学—桥梁与隧道工程]