水利水电技术（中英文）2025，Vol.56Issue(3)：135-146,12.DOI:10.13928/j.cnki.wrahe.2025.03.011
电加热对高寒隧道温度和损伤影响的数值研究
Numerical simulation study on the effect of electric heating on temperature and damage in high-altitude cold tunnels
摘要
Abstract
[Objective]Tunnel projects in high-altitude cold areas are increasing year by year under the national development environment.Tunnel opening frost damage is widespread,and at this stage,the frost protection technology is mainly passive thermal insulation and frost protection technology.[Methods]Based on this,a numerical model of electric heating active protection for high-altitude cold tunnels is established.The tensile damage of the lining under different ambient temperatures,the inhibition effect of electric heating technology on the freezing of the surrounding rock,and the low-temperature deterioration of the lining are analyzed.And the influence of different electric heating power,burial depth,working time,and thickness of insulation board on the protection effect are explored.[Results]The result of the study show that:(1)The damage of tunnel lining becomes more and more serious with the decrease of temperature.Composite electric heating technology can effectively solve the problem of low-temperature damage deterioration;(2)With the lowering of the ambient temperature,the thermal power of the electric heating system of the alpine tunnel increases;(3)Electric heating tape should be laid on the surface of the alpine tunnel lining,and supporting the use of a thickness of about 5 cm of the thermal insulation layer is more effective;(4)The tunnel lining temperature with the change in the ambient temperature with hysteresis.It is recommended to switch on the electric heating system about 15 days before the start of the cold season,and switch off the system 7 days in advance.[Conclusion]Electric heating technology in tunnel insulation and frost protection can greatly improve the effect of insulation and frost protection.Different ambient temperatures require different power of the electric heating system.Through the parametric analysis of electric heating,reasonable construction recommendations are made to guide the application of electric heating technology in tunnel engineering.关键词
隧道工程/高海拔寒区/数值计算/电加热技术/低温损伤Key words
tunneling/high altitude cold region/numerical calculation/electric heating technology/low-temperature damage分类
交通工程引用本文复制引用
齐明山,王祥,陈光友,晏启祥..电加热对高寒隧道温度和损伤影响的数值研究[J].水利水电技术（中英文）,2025,56(3):135-146,12.基金项目
国家自然科学基金区域创新发展联合基金(U21A20152) （U21A20152）
国家自然科学基金面上项目(52278416) （52278416）
