[1]柯政希,庄永香,崔光耀.高岩温隧道聚氨酯隔热层构造型式对隔热效果的影响研究[J].高速铁路技术,2026,(01):31-35,48.[doi:10.12098/j.issn.1674-8247.2026.01.004]
　KE Zhengxi,ZHUANG Yongxiang,CUI Guangyao.On the Influence of Insulation Layer Types on Thermal Insulation Performance in High Geothermal Tunnels[J].HIGH SPEED RAILWAY TECHNOLOGY,2026,(01):31-35,48.[doi:10.12098/j.issn.1674-8247.2026.01.004]
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高岩温隧道聚氨酯隔热层构造型式对隔热效果的影响研究()

《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
期数:
2026年01期
页码:
31-35,48
栏目:
理论探索
出版日期:
2026-01-30

文章信息/Info

Title:
On the Influence of Insulation Layer Types on Thermal Insulation Performance in High Geothermal Tunnels
文章编号:
1674-8247(2026)01-0031-05
作者:
柯政希1; 庄永香2; 崔光耀1
(1.北方工业大学, 北京 100144; 2. 莒南县园林环卫保障服务中心, 山东 临沂 276600)
Author(s):
KE Zhengxi1;  ZHUANG Yongxiang2;  CUI Guangyao1
(1. North China University of Technology, Beijing 100144, China; 2. Junan County Garden Sanitation Support Service Center, Linyi 276600, China)
关键词:
隧道工程;  高岩温;  隔热层;  隔热效果
Keywords:
tunnel engineering;  high rock temperature;  insulation layer;  thermal insulation effect
分类号:
U45
DOI:
10.12098/j.issn.1674-8247.2026.01.004
文献标志码:
A
摘要:
为研究高岩温隧道隔热层型式对隔热效果的影响,依托某高岩温隧道工程,利用Comsol Multiphysics 数值模拟软件,研究了实心隔热层和抽孔型隔热层的隔热效果。研究结果表明,与无隔热层隧道相比,实心隔热层隧道二次衬砌外表面温度降低6.16%,二次衬砌内表面温度降低1.45%; 抽孔型隔热层隧道二次衬砌外表面温度降低6.17%,二次衬砌内表面温度降低1.45%; 将抽孔形状改为圆形和菱形,隧道二次衬砌内外表面温度均无变化。增加抽孔型隔热层开孔率,二次衬砌内外表面温度下降不明显。采用隔热层的隧道隔热效果优于无隔热层,抽孔形状对隔热层隔热效果基本无影响。采用抽孔型隔热层的隔热效果优于实心隔热层,但开孔率增大对隔热效果影响较小,原因为聚氨酯材料导热系数较小,与空气相差不大。研究成果可为高岩温隧道隔热层设计提供参考。
Abstract:
To investigate the influence of insulation layer types on the thermal insulation effect in high geothermal tunnels, this paper, based on a specific high geothermal tunnel project, utilized Comsol Multiphysics numerical simulation software to analyze the thermal insulation performance of solid insulation layers and perforated insulation layers. The results indicate that: compared to tunnels without an insulation layer, the outer surface temperature of the secondary lining decreases by 6.16% and the inner surface temperature decreases by 1.45% for tunnels with a solid insulation layer; for tunnels with a perforated insulation layer, the reductions are 6.17% and 1.45%, respectively. Changing the shape of the perforations to circular or diamond resultes in no change in the temperatures of both the inner and outer surfaces of the secondary lining. Increasing the perforation ratio of the perforated insulation layer does not lead to a significant decrease in the temperatures of the secondary lining surfaces. The thermal insulation effect of tunnels employing an insulation layer is superior to those without one. The shape of the perforations has essentially no impact on the insulation effect. The insulation effect of perforated insulation layers is slightly better than that of solid layers, but increasing the perforation ratio has a minimal influence. This is attributed to the low thermal conductivity of polyurethane material, which is similar to that of air. The research findings provide a valuable reference for the design of insulation layers in high geothermal tunnels.

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备注/Memo

备注/Memo:
收稿日期:2024-04-21
作者简介:柯政希(2001-),男,硕士研究生。
基金项目:国家自然科学基金项目(52178378)
更新日期/Last Update: 2026-01-30