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Experimental Study on the Designed Ventilation System Performance at Rescue Station in Tunnel Fire  

Kim, Dong-Woon (중앙대학교 기계공학부)
Lee, Seong-Hyeok (중앙대학교 기계공학부)
Ryou, Hong-Sun (중앙대학교 기계공학부)
Yoon, Sung-Wook (GS건설 기술연구소)
Publication Information
Journal of the Korean Society for Railway / v.12, no.1, 2009 , pp. 9-15 More about this Journal
Abstract
In this study, the l/35 reduced-scale model experiment were conducted to investigate designed ventilation system performance at rescue station in tunnel fire. A model tunnel with 2 mm thick of steel, 10 m long, 0.19 m high and 0.26m was made by using Froude number scaling law. The cross-passages installing escape door at the center. were connected between accident tunnel and rescue tunnel. The n-heptane pool fire, $4cm\times4cm$, with heat release rate 698.97W were used as fire source. The fire source was located in the center and portal of accident tunnel as Worst case.. An operating ventilation system extracted smoke amount of 0.015 cms. The smoke temperature and carbon monoxide. concentration in cross-passage were measured to verify designed ventilation system. The results showed that, in center fire case without ventilation in accident tunnel, smoke did not propagated to rescue station. In portal tire case, smoke spreaded to rescue station without ventilation. But smoke did not propagated to rescue station with designed ventilation.
Keywords
Tunnel fire; Reduced model; Rescue station; Ventilation system; Smoke propagation;
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