Experimental Study on Smoke Temperature Distribution in Immersed Tunnel Fire Scenarios
(1 School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074;2 China Merchants Chongqing Communications Technology Research & Design Institute Co. Ltd., Chongqing 400067)
Abstract：
Using the Hong Kong-Zhuhai-Macao subsea immersed tunnel as an example, a tunnel fire test was performed by establishing a full-scale experimental platform, the variation law of the smoke temperature over time under different working conditions was researched and the temperature distribution characteristics along the tunnel at the stable combustion stage were analyzed. The results show that the longitudinal ventilation velocity, fuel type, fire scale and location of the ignition source are the main factors affecting smoke temperature distribution characteristics. Additionally, the hazardous areas for trapped people are presented and the recommended installation heights for rescue facilities are given after analyzing the influence of the spreading scope of high-temperature smoke on the escape of personnel and facility arrangement at the fully burning stage.
2015, Vol. 52 