|本期目录/Table of Contents|

[1]陈荣芳,李欣,郭志国,等.隧道受限火灾合理纵向通风风速范围研究*[J].中国安全生产科学技术,2022,18(8):148-153.[doi:10.11731/j.issn.1673-193x.2022.08.022]
 CHEN Rongfang,LI Xin,GUO Zhiguo,et al.Research on reasonable range of longitudinal ventilation velocity in tunnel confined fire[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2022,18(8):148-153.[doi:10.11731/j.issn.1673-193x.2022.08.022]
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隧道受限火灾合理纵向通风风速范围研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
18
期数:
2022年8期
页码:
148-153
栏目:
职业安全卫生管理与技术
出版日期:
2022-08-31

文章信息/Info

Title:
Research on reasonable range of longitudinal ventilation velocity in tunnel confined fire
文章编号:
1673-193X(2022)-08-0148-06
作者:
陈荣芳李欣郭志国周令剑
(江西理工大学 资源与环境工程学院,江西 赣州 341000)
Author(s):
CHEN Rongfang LI Xin GUO Zhiguo ZHOU Lingjian
(School of Resources and Environment Engineering,Jiangxi University of Science and Technology,Ganzhou Jiangxi 341000,China)
关键词:
隧道受限火灾纵向通风烟气特性FDS数值模拟
Keywords:
tunnel confined fire longitudinal ventilation smoke characteristic FDS numerical simulation
分类号:
X932
DOI:
10.11731/j.issn.1673-193x.2022.08.022
文献标志码:
A
摘要:
为探究公路隧道不同受限程度火灾的适宜纵向通风风速,基于FDS模拟分析5种纵向通风速度下不同近壁距离火源顶棚下方烟气最高温度的分布特性、烟羽流倾角及烟气分层状况,提出合理纵向通风风速范围。研究结果表明:在隧道中心线上近火源下游,顶棚下方的最高温度沿纵向均呈指数衰减。不同贴壁距离和纵向通风风速下,均出现烟气分岔流动,随着贴壁距离减小羽流撞击处温升、火羽流偏移角显著增加。当风速小于1.6 m/s时,火源上游出现大量高温烟气回流;而当风速超过2.4 m/s时,分岔流动现象越明显,各偏移角变小,火源下游逐渐后移的烟气层严重失稳。因此,不同受限程度下火灾合理纵向风速为1.6~2.4 m/s。
Abstract:
In order to explore the suitable longitudinal ventilation velocity of highway tunnel fires with different confined degrees,the distribution characteristics of the maximum temperature of smoke under the tunnel ceiling,the inclination angle of smoke plume and the stratification situation of smoke with different near-wall fire source distances under five longitudinal ventilation velocities were simulated and analyzed by FDS,and a reasonable range of longitudinal ventilation velocity was proposed.The results showed that the maximum temperature under the ceiling decreased exponentially near the downstream of fire source on the central line of tunnel.Under different near-wall distances and longitudinal ventilation velocities,the smoke bifurcation flow occurred.With the decrease of near-wall distance,the temperature rise at the plume impact location and the fire plume offset angle increased significantly.When the wind velocity was less than 1.6 m/s,large amount of high-temperature smoke backflow occurred at the upstream of fire source.When the wind velocity exceeded 2.4 m/s,the more obvious the bifurcation flow phenomenon was,the smaller the offset angles were,and the smoke layer gradually moving backward downstream of fire source was seriously unstable.Therefore,the reasonable longitudinal wind velocity of fire under different confined degrees was 1.6 m/s~2.4 m/s.

参考文献/References:

[1]纪杰,钟委,高子鹤.狭长空间烟气流动特性及控制方法[M].北京:科学出版社,2015.
[2]钟委,端木维可,李华琳,等.纵向风作用下隧道火灾烟气分岔流动试验研究[J].中国铁道科学,2016,37(2):56-63. ZHONG Wei,DUANMU Weike,LI Hualin,et al.Experimental study on bifurcation flow of tunnel fire smoke under longitudinal wind[J].China Railway Science,2016,37(2):56-63.
[3]姜学鹏,朱珠,乔意峰,等.纵向通风下隧道长度对临界风速的影响分析[J].地下空间与工程学报,2019,15(4):1267-1272. JIANG Xuepeng,ZHU Zhu,QIAO Yifeng,et al.Influence of tunnel length on critical wind speed under longitudinal ventilation[J].Chinese Journal of Underground Space and Enginee,2019,15(4):1267-1272.
[4]ZHONG W,LI Z Z,WANG T,et al.Experimental study on the influence of different transverse fire locations on the critical longitudinal ventilation velocity in tunnel fires[J].Fire Technology,2015,51(5):1217-1230.
[5]张一龙.基于综合工况下的公路隧道火灾临界风速研究[D].西安:长安大学,2016.
[6]郭宇豪.纵向风作用下隧道火灾烟气分层及安全性研究[D].成都:西南交通大学,2019.
[7]ZENG Z,XIONG K,LU XL,et al.Study on the smoke stratification length under longitudinal ventilation in tunnel fires[J].International Journal of Thermal Sciences,2018,132:285-295.
[8]NEWMAN J S.Experimental evaluation of fire-induced stratification[J].Combustion & Flame,1984,57(1):33-39.
[9]GAO Z H,JI J,FAN C G,et al.Determination of smoke layer interface height of medium scale tunnel fire scenarios[J].Tunnelling and Underground Space Technology,2016,56:118-124.
[10]MCGRATTAN K,HOSTIKKA S,MCDERMOTT R,et al.Fire dynamics simulator (version6.7.1) user’s guide [R].Maryland: National Institute of Standards and Technology,Gaithersburg,2016.
[11]林昊宇.地铁区间隧道烟气分层规律研究[D].重庆:重庆大学,2017.
[12]钟委,刘欣,高子鹤.纵向通风对隧道火灾特性及竖井自然排烟效果的影响[J].郑州大学学报(工学版),2020,41(6):46-52. ZHONG Wei,LIU Xin,GAO Zihe.Influence of longitudinal ventilation on tunnel fire characteristics and natural smoke exhaust effect of shaft[J].Journal of Zhengzhou University(Engineering Science),2020,41(6):46-52.
[13]NYMAN H,INGASON H.Temperature stratification in tunnels[J].Fire Safety Journal,2012,48(2):30-37.
[14]赵忠杰,王甜甜,陈立业.基于FDS的公路隧道火灾通风环境研究[J].安全与环境学报,2020,20(2):495-503. ZHAO Zhongjie,WANG Tiantian,CHEN Liye.Journal of Safety and Environment,2020,20(2):495-503.
[15]ZHAO S Z,LIU F,WANG J,et al.Experimental investigation on fire smoke bifurcation flow in longitudinal ventilated tunnels[J].Fire and Materials,2020,44(5):648-659.

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备注/Memo

备注/Memo:
收稿日期: 2022-03-24
* 基金项目: 国家级大学生创新创业训练计划项目(201910407002);江西省教育厅科学技术项目(GJJ210825)
作者简介: 陈荣芳,硕士研究生,主要研究方向为隧道火灾受限火羽流行为与应急技术。
通信作者: 郭志国,博士,讲师,主要研究方向为矿井通风防灭火技术与受限火羽流行为。
更新日期/Last Update: 2022-09-19