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ISSN : 2233-8292

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Vol.20 No.2
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PSD가 설치된 지하철 역사 내 화재 시 최적배연시스템 연구

A study on the optimal ventilation and smoke exhaust systems in case of fire in subway stations installed with PSD

(사)한국터널지하공간학회 / (사)한국터널지하공간학회, (P)2233-8292; (E)2287-4747
2018, v.20 no.2, pp.527-539
https://doi.org/10.9711/KTAJ.2018.20.2.527
김효규 (㈜주성지앤비)
유지오 (신한대학교 자동차공학과)
김두영 ((주)주성지앤비)
김효규, 유지오, & 김두영. (2018). PSD가 설치된 지하철 역사 내 화재 시 최적배연시스템 연구. (사)한국터널지하공간학회, 20(2), 527-539, https://doi.org/10.9711/KTAJ.2018.20.2.527
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초록

다수의 승객들이 이용하는 지하철은 안전과 공간의 쾌적한 환경관리가 필수적이며, 2003년 이후 기준 강화로 승강장 내에 스크린도어(PSD)를 반드시 설치해야 한다. 선행연구에 따르면 지하철 화재 시에 화재연기의 배연을 위해 배연설비의 설비용량 최적설계가 필요하다. 따라서 본 연구에서는 선행연구의 실험 결과를 바탕으로 3차원 수치해석기법을 이용하여 PSD가 설치된 승강장 내에서 화재발생 시 배연시스템 별로 CO가스와 Smoke의 유동을 분석하였다. 본 연구의 결과 비상시 상부 배연설비만 가동한 경우에는 CO 가스와 Smoke 농도는 653.8 ppm과 768.4 mg/m3로 피난 시 승객들의위험이 큰 것으로 분석되었으며, 모든 배연설비를 가동하고 화재측 PSD만을 개방한 경우 CO 가스와 Smoke 농도 36.0 ppm 및 26.2 mg/m3를 보이며 화재연기의 전파범위가 줄어드는 것으로 분석되었다. 모든 배연설비를 가동하고 화재측PSD를 미개방한 경우에는 화재연기 유입이 발생하지 않아서 대피환경에 있어 가장 효과적인 배연모드로 분석되었다.

keywords
Subway station, Platform screen door, Exhaust system, Computational fluid dynamics, Evacuation environment, 지하철 승강장, 스크린도어, 배연시스템, 전산유체역학, 대피환경

Abstract

The subway used by many passengers is required to maintain a safe and comfortable environment and PSD (Platform Screen Door) must be installed in the platform after reinforcing the standard in 2003. In the previous research, in case of subway fire to control it, it is necessary to design the optimal ventilation and smoke exhaust system according to equipment capacity of the smoke exhaust system. Therefore, in this study, based on the results of previous research, three-dimensional numerical analysis was performed for the CO gas and smoke flow by the subway ventilation system in case of platform fire. As a result of this study, it was found that in case of emergency, if only the upper-level smoke exhaust system is activated, the risk of evacuation is high due to CO gas (653.8 ppm) and smoke concentration (768.4 mg/m3). And when all the smoke exhaust systems are activated and only the fire side PSD is opened, CO gas (36.0 ppm) and smoke concentration (26.2 mg/m3) are detected and the propagation range of smoke flow was reduced. When all the smoke exhaust systems are activated and only the fire side PSD is closed, it was analyzed as the most effective ventilation mode in the evacuation environment due to the absence of smoke-recirculation.

keywords
Subway station, Platform screen door, Exhaust system, Computational fluid dynamics, Evacuation environment, 지하철 승강장, 스크린도어, 배연시스템, 전산유체역학, 대피환경

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