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《Engineering Science》 2004-10
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Study of Fire Smoke Flow Characteristics of Horizontal Tunnel Using Longitudinal Ventilation

Lu ping, Cong Beihua, Liao Guangxuan, Fan Weicheng, Li Peide (State Key Laboratory of Fire Science, University of Science and Technology of China,Hefei 230026, China)  
The management of subway tunnel fire smoke is an important component in city public safety. In this paper, on the basis of theoretical analysis of the main factors affecting fire smoke flow in a subway tunnel, the ventilation and exhaust system were considered as a whole and the effects of buoyancy and thermal resistance were introduced. Further, a mathematical model was established to express the relationships between the critical environments, critical velocities, air speeds, smoke speeds and fire intensities. The results can provide instructions for tunnel smoke managements and emergency handling.
【Fund】: 国家自然科学基金专项基金资助项目 ( 5 0 3 2 3 0 0 5 )
【CateGory Index】: U453
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