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Inclination Effects on Temperature Distribution of Fire Smoke for Highway Tunnel
https://orcid.org/http://orcid.org/0000-0003-4915-6295
Fire fighting in the highway tunnel has been the main threat to the tunnel operation safety. In the present study, a small-scale tunnel model has been established based on Caihongling Tunnel in Jiangmen at China and 24 sets of small-scaled fire model tests have been carried out with tunnel slope gradient, ventilation velocity and fire power as main factors. The slope takes gradient of 0.0%, 1.5% and 3.0%, respectively, and the ventilation velocity is successively set at 0 m/s, 0.3 m/s, 0.6 m/s and 0.9 m/s. Furthermore, the fire power, based on pool fire, is classified as type A and B. As a result of the error of measurement and the influence of environmental factors, the fire source power for type A is set to 17.2 kW and 22 kW for type B. In view of the tests, the present study investigates the smoke flow and longitudinal distribution of temperature along the highway tunnel, with an aim to analyze the range and direction of smoke flow under different operating conditions and further reveal the law of longitudinal distribution of temperature at different levels. According to the test results, it is hoped that the present study can provide some basis and insight for the tunnel structure, fire protection of equipment and the setting of ventilation velocity and evacuation in the case of fire.
Inclination Effects on Temperature Distribution of Fire Smoke for Highway Tunnel
https://orcid.org/http://orcid.org/0000-0003-4915-6295
Fire fighting in the highway tunnel has been the main threat to the tunnel operation safety. In the present study, a small-scale tunnel model has been established based on Caihongling Tunnel in Jiangmen at China and 24 sets of small-scaled fire model tests have been carried out with tunnel slope gradient, ventilation velocity and fire power as main factors. The slope takes gradient of 0.0%, 1.5% and 3.0%, respectively, and the ventilation velocity is successively set at 0 m/s, 0.3 m/s, 0.6 m/s and 0.9 m/s. Furthermore, the fire power, based on pool fire, is classified as type A and B. As a result of the error of measurement and the influence of environmental factors, the fire source power for type A is set to 17.2 kW and 22 kW for type B. In view of the tests, the present study investigates the smoke flow and longitudinal distribution of temperature along the highway tunnel, with an aim to analyze the range and direction of smoke flow under different operating conditions and further reveal the law of longitudinal distribution of temperature at different levels. According to the test results, it is hoped that the present study can provide some basis and insight for the tunnel structure, fire protection of equipment and the setting of ventilation velocity and evacuation in the case of fire.
Inclination Effects on Temperature Distribution of Fire Smoke for Highway Tunnel
https://orcid.org/http://orcid.org/0000-0003-4915-6295
Fire fighting in the highway tunnel has been the main threat to the tunnel operation safety. In the present study, a small-scale tunnel model has been established based on Caihongling Tunnel in Jiangmen at China and 24 sets of small-scaled fire model tests have been carried out with tunnel slope gradient, ventilation velocity and fire power as main factors. The slope takes gradient of 0.0%, 1.5% and 3.0%, respectively, and the ventilation velocity is successively set at 0 m/s, 0.3 m/s, 0.6 m/s and 0.9 m/s. Furthermore, the fire power, based on pool fire, is classified as type A and B. As a result of the error of measurement and the influence of environmental factors, the fire source power for type A is set to 17.2 kW and 22 kW for type B. In view of the tests, the present study investigates the smoke flow and longitudinal distribution of temperature along the highway tunnel, with an aim to analyze the range and direction of smoke flow under different operating conditions and further reveal the law of longitudinal distribution of temperature at different levels. According to the test results, it is hoped that the present study can provide some basis and insight for the tunnel structure, fire protection of equipment and the setting of ventilation velocity and evacuation in the case of fire.
Inclination Effects on Temperature Distribution of Fire Smoke for Highway Tunnel
Iran J Sci Technol Trans Civ Eng
Cheng, Jianwei (author) / Wang, Zui (author) / Liu, Fangyuan (author) / Qi, Chang (author)
2021-12-01
14 pages
Article (Journal)
Electronic Resource
English
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