Study on the Effect of Blockage Ratio on Maximum Smoke Temperature Rise in the Underground Interconnected Tunnel

被引：4
作者：
Xu, Zhisheng [1 ,2 ]
Zhen, Yaxing [1 ,2 ]
Xie, Baochao [1 ,2 ]
Tagne, Sylvain Marcial Sakepa [1 ]
Zhao, Jiaming [1 ,2 ]
Ying, Houlin [1 ,2 ]
机构：
[1] Cent South Univ CSU, Sch Civil Engn, Changsha 410075, Peoples R China
[2] Cent South Univ, Natl Engn Res Ctr High Speed Railway Construct Tec, Changsha 410075, Peoples R China
来源：
FIRE-SWITZERLAND | 2023年 / 6卷 / 02期
关键词：
underground interconnected tunnel; maximum temperature rise; blockage ratio; longitudinal ventilation velocity; LONGITUDINAL VENTILATION; CRITICAL VELOCITY; FIRES; FLOW;
D O I：
10.3390/fire6020050
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ; 0713 ;
摘要：
The model-scale tunnel is used in this investigation to analyze the maximum smoke temperature rise of the interconnected tunnel for various longitudinal ventilation velocities, blockage ratios, and heat release rates where the fire is at the confluence of the underground interconnected tunnel. The results showed that the longitudinal ventilation velocities of both the ramp upstream of the fire source and the adjacent ramp influenced the maximum temperature rise under the underground interconnected tunnel, and the ventilation of both ramps jointly affected the maximum temperature rise. The change in the maximum temperature rise depends on who is more affected by the longitudinal ventilation velocity or the vehicle blockage ratio. As the longitudinal ventilation velocity in the interconnected tunnel increases, the convective heat transfer near the fire source increases, resulting in a decrease in the maximum temperature rise, and the effect of the blockage ratio on the maximum temperature rise is reduced. In this paper, a maximum temperature rise prediction model suitable for the case of blockage in the interconnected tunnel is proposed.
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页数：14
相关论文
共 24 条
[1]  
Alpert R.L., 1972, FIRE TECHNOL, V8, P181, DOI DOI 10.1007/BF02590543
[2]   Experimental study on smoke characteristics of bifurcated tunnel fire [J].
Chen, Longfei ;
Mao, Pengfei ;
Zhang, Yuchun ;
Xing, Shaoshuai ;
Li, Tao .
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2020, 98
[3]   Comparative study on ventilation and smoke extraction systems of different super-long river-crossing subway tunnels under fire scenarios [J].
Guo, Xinxin ;
Pan, Xuhai ;
Zhang, Lijing ;
Wang, Zhilei ;
Hua, Min ;
Jiang, Juncheng .
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2021, 113
[4]   Full-scale experimental investigation on smoke spreading and thermal characteristic in a transversely ventilated urban traffic link tunnel [J].
Han, Jiaqiang ;
Liu, Fang ;
Wang, Fei ;
Weng, Miaocheng ;
Liao, Shujiang .
INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 2021, 170
[5]  
Heskestad Gunnar., 1979, Symposium (International) on Combustion, V17, P1113, DOI [10.1016/S0082-0784(79)80106-X, DOI 10.1016/S0082-0784(79)80106-X]
[6]   An experimental investigation and correlation on buoyant gas temperature below ceiling in a slopping tunnel fire [J].
Hu, L. H. ;
Chen, L. F. ;
Wu, L. ;
Li, Y. F. ;
Zhang, J. Y. ;
Meng, N. .
APPLIED THERMAL ENGINEERING, 2013, 51 (1-2) :246-254
[7]   Experimental investigation on maximum gas temperature beneath the ceiling in a branched tunnel fire [J].
Huang, Youbo ;
Li, Yanfeng ;
Li, Junmei ;
Li, Jiaxin ;
Wu, Ke ;
Zhu, Kai ;
Li, Haihang .
INTERNATIONAL JOURNAL OF THERMAL SCIENCES, 2019, 145
[8]   Characteristic length scale of critical ventilation velocity in tunnel smoke control [J].
Kang, Kai .
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2010, 25 (03) :205-211
[9]   An experimental study on the effects of blockage ratio and ventilation velocity on the heat release rate of tunnel fires [J].
Kayili, Serkan ;
Yozgatligil, Ahmet ;
Eralp, O. Cahit .
JOURNAL OF FIRE SCIENCES, 2011, 29 (06) :555-575
[10]   Fire properties in near field of square fire source with longitudinal ventilation in tunnels [J].
Kurioka, H ;
Oka, Y ;
Satoh, H ;
Sugawa, O .
FIRE SAFETY JOURNAL, 2003, 38 (04) :319-340
123