中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (10): 56-61.doi: 10.16265/j.cnki.issn1003-3033.2018.10.010

• 安全工程技术科学 • 上一篇    下一篇

强制通风对隧道起火影响的全尺寸试验研究

孙少华1, 程家骥2 讲师, 丛北华1, 杨万宝1   

  1. 1 上海同泰火安科技有限公司,上海 201703
    2 青岛科技大学 环境与安全工程学院,山东 青岛 266042
  • 收稿日期:2018-07-10 修回日期:2018-08-28 出版日期:2018-10-28 发布日期:2020-11-20
  • 作者简介:孙少华 (1987—),男,河南周口人,硕士,助理工程师,主要从事地下空间火灾控制及灾害防治、隧道及地下空间通风研究。E-mail:sunshaohua@tongtai-sh.com。
  • 基金资助:
    国家重点研发计划项目(2016YFC0800200)。

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

SUN Shaohua1, CHENG Jiaji2, CONG Beihua1, YANG Wanbao1   

  1. 1 Shanghai Tongtai Fire Security & Technology Co., Ltd, Shanghai 201703, China
    2 College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao Shandong 266042, China
  • Received:2018-07-10 Revised:2018-08-28 Online:2018-10-28 Published:2020-11-20

摘要: 为探究隧道强制通风风速对隧道火灾发展的影响,采用全尺寸实体试验方法,搭建一个长50.0 m,宽5.5 m,高8.2 m的试验隧道,以木垛作为火源,采用一端强制通风的方式进行通风,研究隧道内起火时隧道内部温度变化、火源热释放速率、烟气成分含量等与强制通风风速的关系。结果表明:强制通风的风速对于隧道内起火源的燃烧情况有较大影响;风速的增加会降低火源对隧道上方温度的影响,同时也会降低隧道中的环境温度;强制通风风速的增大会明显增加火源的热释放速率,但是不会影响热释放速率的变化趋势;强制通风风速明显影响烟气中二氧化碳和一氧化碳的体积分数。

关键词: 隧道火灾, 强制通风, 全尺寸试验, 温度, 热释放速率, 气体体积分数

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

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