자연풍 및 배기운전조건이 섬식 지하역사 승강장 위의 화재에 미치는 영향

초록

In this study effects of natural wind and ventilation operating type are studied numerically to examine the fire characteristics from a fire on the platform of an underground subway station of island type. Ventilation rooms of Munjune station of Pusan Subway Line 2 are located at both ends of the lobby and ventilation is controled separately for two zones at the same flowrate. Effects of natural wind, stairs, stair walls and columns on the distribution of heat, smoke, visibility and toxic gases are studied. The numerical results show that the natural wind causes a rapid spread of the fire along the tunnel. The numerical result also show that the the dual operation of the two ventilation systems result in better smoke rejection efficiency as compared to the single operation of the ventilation systems near the fire.

키워드