地下鐵 昇降場 制煙境界壁의 煙氣擴散 遲延에 대한 硏究

Abstract

In this study, a fire with polyurethane has been assumed to see the suitability of the Smoke Reservoir Screen which is set up at the 17.4m *5.0m*7.0m size real platform. In order to analyze the effect of a fire to the evacuation stairway, temperature, carbon monoxide and flow speed at the evacuation stairway have been compared to each otherusing FDS(Fire Dynamics Simulator)program. According to this result, we’ve got the conclusion below. 1) The effect of ventilation speed was not too much different at the 1.2m/s and 2.27m/s ventilation speed without any relationship with Smoke Reservoir Screen set up 2) In case with Smoke Reservoir Screen set up, platform stairway and temperature of waiting room entrance was lower than the case without Smoke Reservoir Screen set up. 3) The density of carbon monoxide shows the similar result with temperature distribution. 4) In case without the Smoke Reservoir Screen set up, smoke moves fast to the stairway ceiling. On the other hands, in case with the Smoke Reservoir Screen set up, it was observed that the Smoke Reservoir Screen prevents the smoke diffusion through the investigation of temperature, a distribution of carbon monoxide, and the shape of smoke moving 5) From these result, it is concluded that the Smoke Reservoir Screen can provide more time for escaping