本文選題：風速 + 隧道　； 參考：《火災(zāi)科學》2017年01期

【摘要】：隧道作為交通的咽喉要道,一旦發(fā)生火災(zāi),給人員逃生帶來很大的困難。利用隧道火災(zāi)模擬平臺,分別對車頂和車底兩個位置進行了細水霧滅火的模擬實驗,研究不同風速對隧道火災(zāi)的溫度、氣體組分濃度和熱輻射等參量的影響,據(jù)此研究細水霧滅火系統(tǒng)在隧道火災(zāi)中抑制、撲滅火災(zāi),降低火場溫度、凈化火源附近空氣以及隔絕熱輻射的能力。結(jié)果表明:當風速增大時,火場煙氣平均溫度逐漸減小,CO濃度的峰值顯著降低,熱輻射強度也有效降低。在實驗條件下,隧道縱向通風作用有利于保障火場安全。
[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.
【作者單位】： 中國科學技術(shù)大學火災(zāi)科學國家重點實驗室;合肥科大立安安全技術(shù)股份有限公司;公安部上海消防研究所;
【分類號】：U458
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本文編號：2110353