科技创新与应用2025，Vol.15Issue(18)：50-56,61,8.DOI:10.19981/j.CN23-1581/G3.2025.18.011
高地温引水隧洞施工通风降温数值模拟研究
邹凤维 1魏曦 2罗会银 1丁培培 2倪博 2胡显明3
作者信息
- 1. 中国水利水电第七工程局有限公司,成都 610081
- 2. 四川大学 水利水电学院,成都 610065
- 3. 广元市交通投资集团有限公司,四川 广元 628017
- 折叠
摘要
Abstract
To address the geothermal hazard in water diversion tunnels,numerical simulations were conducted using the COMSOL Multiphysics to investigate the changes in internal temperature during tunnel ventilation.The effects of various factors,including different ventilation speeds,ventilation temperatures,surrounding rock temperatures,and thermal insulation layers,on the cooling performance of tunnel ventilation were studied.The calculation results indicate that when the air temperature is set at 5℃ and 15℃,the ambient temperature within the range of 10～30 m behind the tunnel face can be reduced to below 28℃within half an hour of ventilation.After two hours of ventilation,using a lower airflow velocity(v=0.5 m/s)can reduce the overall tunnel temperature to a level close to that achieved with a higher airflow velocity(v=0.9 m/s).When the surrounding rock temperature reaches 60℃,except for the area 10 m behind the tunnel face,the temperatures at farther locations can be reduced to below 28℃with sufficient ventilation time.With the application of thermal insulation layers,the temperature reductions at 10 m and 30 m can further reach 41.1%and 14.0%,respectively.The research results can provide reference for controlling high-temperature heat damage in diversion tunnels.关键词
引水隧洞/通风降温/数值模拟/隔热措施/高地温热害Key words
diversion tunnel/ventilation and cooling/numerical simulation/heat insulation measures/highland heat hazard分类
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邹凤维,魏曦,罗会银,丁培培,倪博,胡显明..高地温引水隧洞施工通风降温数值模拟研究[J].科技创新与应用,2025,15(18):50-56,61,8.
