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Inclination Effects on Temperature Distribution of Fire Smoke for Highway Tunnel

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Iranian Journal of Science and Technology, Transactions of Civil Engineering Aims and scope Submit manuscript

Abstract

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.

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Acknowledgements

This work is financially supported by grant from the Fundamental Research Funds for the Central Universities (Grant No. 2015XKMS007). The authors are grateful for the support.

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Authors and Affiliations

  1. Key Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Xuzhou, 220116, Jiangsu, China

    Jianwei Cheng, Zui Wang & Chang Qi

  2. Nanjing Safirst Technology Company Limited, Xuzhou, 220116, Jiangsu, China

    Fangyuan Liu

Authors
  1. Jianwei Cheng
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  2. Zui Wang
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  3. Fangyuan Liu
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  4. Chang Qi
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Correspondence to Jianwei Cheng.

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Cheng, J., Wang, Z., Liu, F. et al. Inclination Effects on Temperature Distribution of Fire Smoke for Highway Tunnel. Iran J Sci Technol Trans Civ Eng 45, 2817–2830 (2021). https://doi.org/10.1007/s40996-020-00452-3

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  • DOI: https://doi.org/10.1007/s40996-020-00452-3

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