Full-scale experimental study of a fire under a vehicle in a sloped tunnel

被引：0
|
作者：
Yang Y. [1 ,2 ]
Liu C. [1 ]
Qiu P. [1 ,3 ]
Long Z. [1 ]
Zhong M. [1 ]
机构：
[1] Institute of Public Safety Research, Department of Engineering Physics, Tsinghua University, Beijing
[2] Beijing Key Laboratory of City Integrated Emergency Response Science, Tsinghua University, Beijing
[3] Guangzhou Metro Group Co., Ltd., Guangzhou
来源：
Zhong, Maohua (mhzhong@tsinghua.edu.cn) | 1600年 / Tsinghua University卷 / 60期
关键词：
Blockage; Fire; Full-scale experiment; Slope; Tunnel;
D O I：
10.16511/j.cnki.qhdxxb.2020.25.028
中图分类号：
学科分类号：
摘要：
Smoke diffusion caused by the stack effect and the blocking effect in a sloped tunnel was investigated in a full-scale fire experiment under a stationary vehicle on an urban rail transit line. The ventilation mode and the vehicle blocking were varied to study the effects of the airflow velocity, the vertical distribution of the smoke temperature, the smoke layer distribution and the smoke spread time. The results show that the ventilation mode and the vehicle blocking both change the flow field near the fire which in turn influences the airflow velocity, smoke distribution and smoke spread time. A smoke spread velocity model was then used to further study the smoke diffusion for various vehicle blocking conditions. The conclusions can guide smoke control design and personnel evacuation plans for such tunnel fire scenarios. © 2020, Tsinghua University Press. All right reserved.
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页码：1030 / 1038
页数：8
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共 20 条
  • [1] CHEN C K, ZHU C X, LIU X Y, Et al., The effect of fuel area size on behavior of fires in a reduced-scale single-track railway tunnel, Tunnelling and Underground Space Technology, 52, pp. 127-137, (2016)
  • [2] ZHANG S G, CHENG X D, YAO Y Z, Et al., An experimental investigation on blockage effect of metro train on the smoke back-layering in subway tunnel fires, Applied Thermal Engineering, 99, pp. 214-223, (2016)
  • [3] MORANDINI F, SILVANI X, HONORE D, Et al., Slope effects on the fluid dynamics of a fire spreading across a fuel bed: PIV measurements and OH* chemiluminescence imaging, Experiments in Fluids, 55, 8, (2014)
  • [4] HU L H, CHEN L F, WU L, Et al., An experimental investigation and correlation on buoyant gas temperature below ceiling in a slopping tunnel fire, Applied Thermal Engineering, 51, 1-2, pp. 246-254, (2013)
  • [5] LIU C, ZHONG M H, SHI C L, Et al., Temperature profile of fire-induced smoke in node area of a full-scale mine shaft tunnel under natural ventilation, Applied Thermal Engineering, 110, pp. 382-389, (2017)
  • [6] LIU C, ZHONG M H, TIAN X L, Et al., Study on emergency ventilation for train fire environment in metro interchange tunnel, Building and Environment, 147, pp. 267-283, (2019)
  • [7] LIU C, ZHONG M H, TIAN X L, Et al., Experimental and numerical study on fire-induced smoke temperature in connected area of metro tunnel under natural ventilation, International Journal of Thermal Sciences, 138, pp. 84-97, (2019)
  • [8] LIU C, ZHONG M H, SONG S Y, Et al., Experimental and numerical study on critical ventilation velocity for confining fire smoke in metro connected tunnel, Tunnelling and Underground Space Technology, 97, pp. 84-97, (2020)
  • [9] ZHONG M H, SHI C L, HE L, Et al., Smoke development in full-scale sloped long and large curved tunnel fires under natural ventilation, Applied Thermal Engineering, 108, pp. 857-865, (2016)
  • [10] LI Y F, WANG H Y, ZHAO M X, Et al., Fire temperature distribution of sloping tunnels, Fire Science and Technology, 35, 12, pp. 1677-1679, (2016)
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