寒区隧道保温技术现状与问题

Status Quo and Problems of Thermal Insulation Technology for Tunnel in Cold Regions

对运营通车的寒冷地区公路隧道调查发现,有80%以上隧道存在各种各样冻害问题,为减少寒区隧道的冻害,必须采取针对性的措施。为此,主要依托青海省境内高海拔寒区隧道,基于调研的基本资料,从中分析目前寒区隧道的防寒保暖现状,以及目前在防寒保暖方面亟待解决的问题。

According to the surveys on the highway tunnel in operation in these cold regions, it was found that various cold damages existed on more than 80 % of the tunnels, thus the countermeasures must be taken to reduce these damages. For this purpose, on the basis of the tunnel in the high altitude and cold regions in Qinghai Province and the basic information from investigation, the status quo of cold and warm on such tunnel, with the problems thereof to be solved, was analyzed.