Full-scale experimental study on effects of forced ventilation on tunnel fire

doi:10.16265/j.cnki.issn1003-3033.2018.10.010

Abstract

Abstract: The relationships between the forced ventilation speed and heat release rate, temperature in tunnel, smoke components et al were studied by carrying out full-scale experiments, with an experimental tunnel of 50.0 m (L)×5.5 m (W)×8.2 m (H). A timber crib was used as the combustion source. The results show that the forced ventilation speed had a significant impact on the burning in the tunnel, that increasing of the forced ventilation speed reduces the temperature above the fire and in the tunnel, that increasing of the forced ventilation speed would increase the heat release rate of the fire, but does not affect the trend of the heat release rate curve, and that the volume fractions of both carbon dioxide and carbon monoxide are affected by the forced ventilation obviously.

Key words: tunnel fire, forced ventilation, full-scale experiment, temperature, heat release rate, gas concentration

CLC Number:

X932

SUN Shaohua, CHENG Jiaji, CONG Beihua, YANG Wanbao. Full-scale experimental study on effects of forced ventilation on tunnel fire[J]. China Safety Science Journal, 2018, 28(10): 56-61.

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