基于对流-导热耦合作用的寒区隧道保温隔热层研究

doi:10.3973/j.issn.2096-4498.2017.S2.014

隧道建设（中英文） ›› 2017, Vol. 37 ›› Issue (S2): 94-101.DOI: 10.3973/j.issn.2096-4498.2017.S2.014

基于对流-导热耦合作用的寒区隧道保温隔热层研究

白赟¹，曾艳华^{1, *}，周小涵²，严晓楠¹，范磊³

(1. 西南交通大学交通隧道工程教育部重点实验室，四川成都 610031； 2. 中铁大桥勘测设计院集团有限公司，湖北武汉 430050； 3. 中铁二院工程集团有限责任公司土建一院隧道所，四川成都 610031)

收稿日期:2017-07-24 修回日期:2017-10-09 出版日期:2017-12-30 发布日期:2018-02-25
作者简介:白赟（1988—），男，山西大同人，西南交通大学桥梁与隧道工程专业在读博士，研究方向为隧道通风与防灾。Email： by165@126.com。*通信作者：曾艳华， Email： zengyhua@163.com。
基金资助:
国家自然科学基金项目（51278426）

Study of Heat Preservation and Insulation Layer for Tunnels in Cold Region Based on ConvectionConduction Interaction

BAI Yun¹, ZENG Yanhua^{1, *}, ZHOU Xiaohan², YAN Xiaonan¹, FAN Lei³

(1. Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, Sichuan, China; 2. China Railway Major Bridge Reconnaissance & Design Institute Co., Ltd., Wuhan 430050, Hubei, China; 3. Tunnel Section of First Civil Construction Design & Research Institute, China Railway Eryuan Engineering Group Co., Ltd., Chengdu 610031, Sichuan, China)

Received:2017-07-24 Revised:2017-10-09 Online:2017-12-30 Published:2018-02-25

摘要/Abstract

摘要：

寒区隧道的抗冻措施研究对隧道建设有重要意义，基于对流-导热耦合作用的非稳态传热有限差分计算模型，计算分析寒区隧道多年冻土和非冻土段外贴式及中隔式保温隔热层的保温隔热效果，并对寒区隧道纵向铺设保温隔热层后的抗冻效果展开研究。结果表明： 1)在非冻土地层外贴式保温层保温效果较佳，在多年冻土地层中隔式隔热层隔热效果较佳，两者效果相差不大； 2)受周期性入口风温的影响，隧道衬砌背后温度呈现周期性变化，变化幅度逐年递减。在材料、施工允许的前提下，建议采用外贴式保温隔热层；设计时，保温隔热层厚度应作经济技术比选。本文研究成果可供寒区隧道设计者与研究者参考。

关键词: 寒区隧道, 非稳态, 保温隔热层, 有限差分, 温度场

Abstract:

The study of heat preservation methods for tunnels in cold region is very important. As a result, a unsteady heat transfer finite difference calculation model is established based on convectionconduction interaction; the heat preservation and insulation effect of surface and sandwich heat preservation and insulation layer on sections of tunnels with and without permafrost is calculated and analyzed respectively; and the antifreezing effect of heat preservation layer along longitudinal direction of tunnel is studied. The results show that: 1) The surface heat preservation and insulation layer has a good effect on tunnel section without permafrost, while the sandwich one has a good effect on tunnel section with permafrost; and the heat preservation and insulation effects of these two kinds of layers vary little. 2) The temperature behind the tunnel lining shows periodic variation due to the influence of wind temperature, and the temperature variation range decreases over years. It is proposed that the surface layer should be adopted preferentially; and economical comparison should be made in design phase. The results can provide reference for design of tunnels in cold region in the future.

Key words: cold region tunnel, unsteady, heat preservation and insulation layer, finite difference, temperature field

中图分类号:

U 45

白赟，曾艳华，周小涵，严晓楠，范磊. 基于对流-导热耦合作用的寒区隧道保温隔热层研究[J]. 隧道建设, 2017, 37(S2): 94-101.

BAI Yun, ZENG Yanhua, ZHOU Xiaohan, YAN Xiaonan, FAN Lei. Study of Heat Preservation and Insulation Layer for Tunnels in Cold Region Based on ConvectionConduction Interaction[J]. Tunnel Construction, 2017, 37(S2): 94-101.

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基于对流-导热耦合作用的寒区隧道保温隔热层研究

Study of Heat Preservation and Insulation Layer for Tunnels in Cold Region Based on ConvectionConduction Interaction

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