云南省香德2级公路德钦隧道保温防冻设计

云南省香德2级公路德钦隧道处于低纬度高海拔地区，海拔约3400m，冬季寒冷，冰冻时间长，建设时须进行保温防冻设计。从保温防冻工程措施、保温材料设置方式、保温材料比选等方面介绍德钦隧道的保温防冻设计，其对于类似寒区隧道的保温防冻设计具有一定参考价值。

Insulation and Antifreeze Design of Deqin Tunnel on Xiangde Second-class Highway in Yunnan Province

Deqin Tunnel on Xiangde second-class Highway in Yunnan Provlnce is located in low- latitude and high- altitude （approximate 3400m） region characterized by cold winter and long frozen period, so insulation and antifreeze design is required during construction. This paper introduces insulation and antifreeze design of Deqin Tunnel from aspects of insulation and antifreeze engineering measures, setting modes of insulation materials, comparison and selection of insulation materials, etc. so as to provide a certain reference value for insulation and antifreeze design of tunnels in similar cold regions.