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A Study on the Inflow Velocity Reduction Measures in Case of Fire Great Depth Underground Double-Deck Tunnel
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  • Journal title : Fire Science and Engineering
  • Volume 30, Issue 2,  2016, pp.81-86
  • Publisher : Korea Institute of Fire Science and Engineering
  • DOI : 10.7731/KIFSE.2016.30.2.081
 Title & Authors
A Study on the Inflow Velocity Reduction Measures in Case of Fire Great Depth Underground Double-Deck Tunnel
Yang, Yong-Won; Moon, Jung-Joo; Shin, Tae-Gyun;
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Recently, frequent traffic congestion has occurred in domestic urban roads. As a solution for downtown traffic congestion in domestic urban roads, plans for great depth underground double-deck tunnels have been made. Great depth underground double-deck tunnels that have been planned for passenger cars, has the structure of a network type; the entry of vehicles is carried out in the underground space. In these network great depth underground double-deck tunnels, the cross section and the height of the tunnel are smaller than the general road tunnel, and the smoke of a fire will propagate faster than the evacuation of tunnel passengers by the action of the traffic-ventilation and casualties are expected. Therefore, in the present study, an attempt was made to prevent the delay system for fire smoke diffusion at the time of a fire in a domestic network great depth underground double-deck tunnel according to the area of the tunnel block during the operation of the delay system for fire smoke diffusion to analyze the effects of reducing the inflow velocity. When the area of the tunnel block was not less than 50%, the effect of reducing about 21% of the wind speed acting on the tunnel was significant. If the area is more than 50%, the diffusion rate of fire smoke was reduced by approximately 21%, which will be useful for a safe evacuation.
Great depth underground double deck tunnel;Delay system for fire smoke diffusion;Tunnel fire;
 Cited by
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