纵向风速对隧道中细水雾灭火效果的影响研究

发布时间：2018-07-09 19:01

  本文选题：风速 + 隧道　； 参考：《火灾科学》2017年01期

【摘要】：隧道作为交通的咽喉要道,一旦发生火灾,给人员逃生带来很大的困难。利用隧道火灾模拟平台,分别对车顶和车底两个位置进行了细水雾灭火的模拟实验,研究不同风速对隧道火灾的温度、气体组分浓度和热辐射等参量的影响,据此研究细水雾灭火系统在隧道火灾中抑制、扑灭火灾,降低火场温度、净化火源附近空气以及隔绝热辐射的能力。结果表明:当风速增大时,火场烟气平均温度逐渐减小,CO浓度的峰值显著降低,热辐射强度也有效降低。在实验条件下,隧道纵向通风作用有利于保障火场安全。
[Abstract]:Tunnel is the main throat of traffic, once fire occurs, it brings great difficulty to personnel to escape. Using the tunnel fire simulation platform, the fire extinguishing experiments of water mist were carried out on the roof and bottom of the vehicle, respectively, and the effects of different wind speeds on the temperature, gas component concentration and thermal radiation of tunnel fire were studied. Based on this, the ability of water mist fire extinguishing system in tunnel fire suppression, extinguishing fire, lowering fire temperature, purifying the air near fire source and isolating heat radiation is studied. The results show that when the wind speed increases, the peak value of CO concentration decreases significantly and the thermal radiation intensity decreases effectively. Under the experimental conditions, the longitudinal ventilation of the tunnel is beneficial to the safety of the fire site.
【作者单位】： 中国科学技术大学火灾科学国家重点实验室;合肥科大立安安全技术股份有限公司;公安部上海消防研究所;
【分类号】：U458
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本文编号：2110353