Experimental Study on Smoke Control Scheme for Quasi-rectangular Tunnel Fire

2019 2nd International Conference on Advanced Materials, Intelligent Manufacturing and Automation

Tang, Jixin^1 ; Wang, Jingxuan^2 ; Wang, Dongfang^1 ; Zhao, Wei^3 ; Lu, Shichang^4 ; Liu, Wanfu^2

Ningbo Rail Transit Group Co. Ltd., Ningbo, Zhejiang

315101, China^1

Tianjin University of Commerce, Tianjin

300134, China^2

Tianjin China Railway Electrification Design and Research Institute Co. Ltd., Tianjin

300250, China^3

Tianjin Fire Research Institute of MEM, Tianjin

300381, China^4

关键词: Double holes;    Longitudinal ventilation;    Positive pressure ventilation;    Rectangular tunnel;    Smoke control;    Smoke spreads;    Smoke temperature;    Tunnel test;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/569/4/042061/pdf
DOI  :  10.1088/1757-899X/569/4/042061

来源: IOP

【 摘 要 】

Taking a quasi-rectangular Tunnel in a city as a prototype, a 1:3 scale tunnel test platform is built. Through the analysis of the smoke spread phenomenon and the change of tunnel longitudinal smoke temperature, the smoke exhaust effect of the quasi-rectangular tunnel with longitudinal ventilation in the ignition tunnel and positive pressure ventilation in the non-ignition tunnel is explored. The test results show that under the smoke exhaust mode of the longitudinal ventilation of the ignition tunnel and positive pressure ventilation in the non-ignition tunnel, in the case of a double-hole in an evacuation passage of quasi-rectangular tunnel, when the fire source is located at the evacuation passage, it can effectively prevent the smoke from entering the non-ignition tunnel.