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为应对寒区隧道冻害,防寒保暖研究不断朝着节能、绿色环保方向发展。结合现场调查,讨论和分析了主要保温方法的研究成果和应用现状,结果表明,铺设保温层等被动保温措施不能彻底消除冻害;使用电加热初期投资少,但后期运营成本较高,带来污染;地热能作为可重复再生的、清洁环保的一次能源,将其应用于寒区隧道的防冻保暖,可以实现节能减排;并分析了利用地热能进行隧道保温防冻的优化设计方法;进一步提出了未来寒区公路隧道防冻害的发展方向。
In order to cope with cold damage in tunnels in cold regions, research on cold-proof and warm-keeping continues to develop in the direction of energy saving and environmental protection. According to the field investigation, the research results and application status of the main insulation methods are discussed and analyzed. The results show that passive insulation measures such as thermal insulation can not completely eliminate the frost damage. The initial investment in electric heating is less, but the later operation costs are higher and the pollution is brought As a renewable, clean and environment-friendly primary energy, geothermal energy can be applied to cold-frigid tunnels to save energy and reduce emissions. Geothermal energy is also used to optimize the design of tunnel insulation and freeze protection. Future Development of Frost Preventing in Highway Tunnel in Cold Area.