Study of a proposed tunnel evacuation passageway formed by opposite-double air curtain ventilation
Study of a proposed tunnel evacuation passageway formed by opposite-double air curtain ventilation
复制标题
拟建隧道双风幕通风疏散通道研究
DOI：
10.1016/j.ssci.2012.03.007
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发表时间：
2012-08-01
期刊：
影响因子：
6.1
通讯作者：
Deng, Baoshun
中科院分区：
文献类型：
--
作者：
Gao, Ran;Li, Angui;Deng, Baoshun
地铁隧道火灾往往造成重大的人员伤亡和灾难。为帮助隧道内人员疏散，提出了一种对向双风幕通风辅助隧道疏散系统。它可以用来创建一个安全的疏散通道，是免费的烟雾通过了隧道的长度。将OTES的性能与传统通风系统（纵向通风和自然通风）的性能进行了比较。研究还表明，与自然通风和纵向通风相比，采用OTES时的CO浓度显著降低。在HRR相同的情况下，OTES的CO浓度值仅为自然通风的0.58-2.41%或隧道后端纵向通风的0.52-3.12%。OTES创造了一个明显清晰的疏散通道。测试了火源位置和火灾探测时间的变化对隧道通风的影响。还报道了这些变化对OTES形成疏散通道的影响。(C)2012爱思唯尔有限公司保留所有权利。
Subway tunnel fires often result in catastrophes and heavy casualties. To help people evacuate from a tunnel fire, an opposite-double air curtain ventilation assisted tunnel evacuation system (OTES) is introduced. It can be used to create a safe evacuation passageway that is free of smoke through out the length of the tunnel. The performance of the OTES is compared with that of the traditional ventilation systems: longitudinal ventilation and natural ventilation. The effect of the heat release rate, fire source location, and fire detection time are also discussed.This study also shows that compared with natural ventilation and longitudinal ventilation, the carbon monoxide, CO, concentration with OTES is significantly lower. Given the same HRR, the CO concentration values with OTES are only 0.58-2.41% of natural ventilation or 0.52-3.12% of longitudinal ventilation at the back end of the tunnel. An obviously clear evacuation passageway is created by OTES. The effects of changes in fire source location and fire detection time on tunnel ventilation are tested. Also the effect of these changes on the formation of an evacuation passageway by OTES is reported. (C) 2012 Elsevier Ltd. All rights reserved.