• 한국전산유체공학회:학술대회논문집
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• 2010.05a
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• pp.505-507
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• 2010

In this paper, the comparison on the fire driven smoke flow for platform types was conducted in the Deeply Underground Subway Station. Soongsil-University station (47m depth) as a bank type platform and Mandeok Station as a island type platform were selected for fire numerical simulation. The characteristics of fire driven smoke-flows were analyzed from the simulation results. The proper plan of evacuation against fire for each type was considered through the results.

• Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
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• v.8 no.7
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• pp.485-496
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• 2018

In this paper, the smoke behavior in an underground station on operation of the fans in the ventiliation of the station was measured by the experimental method when the fire occurred in the underground station platform where the platfrom screen door was installed. The ventilation characteristics were compared when the ventilation system was operated and when the ventilation system was not operated when a fire occurred at the platform where the clean door was closed. To simulate the fire smoke, the smoke generated from the smoke generator was heated using a hot air fan. The transmittance was measured using a smoke density meter to quantitatively measure fire smoke. If the screen door is closed and the ventilation system of the underground station does not work, it is confirmed that if a fire occurs in the platform, smoke accumulates inside the platform, evacuating passengers is very difficult and can lead to a very dangerous situation. On the other hand, under the condition that the ventilation facility of the subway station is operated, the smoke evacuates to the outside through the ventilation facility of the underground station, and airflow is formed in the direction from the waiting room to the waiting area, so that the passenger located on the platform can safely evacuate toward the concourse. In the following paper, we will discuss the concurrent effect of tunnel ventilation through tunnel vent near the platform.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2000.11a
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• pp.176-182
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• 2000

철도교에서 철도역사의 경우 도로교와 달리 승객의 이동시 필요한 승강장이 존재하기 때문에 승강장의 통로를 위해 개구부가 존재할 수밖에 없다. 따라서 철도교의 철도역사에 대한 구조해석 시 슬래브에 위치한 개구부에 대한 고려가 필수적이다. 그러나 최근까지의 철도교의 철도역사에 대한 구조해석은 2차원 평면 해석에 의존하는 경우가 많아서 개구부에 대한 고려가 없거나 소홀했던 것이 사실이다.(중략)

• Journal of the Korean Society for Railway
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• v.15 no.4
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• pp.352-356
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• 2012

Heights of a platform above the rail for the passenger train in the country are classified into two categories such as the low level (500mm; mainline) and the high level (1,135mm; metropolitan subway line) platforms. In order to operate similarly both a mainline railroad and a metropolitan subway line, as the requisite door safety system, it is necessary to develop the doorstep equipment of the rolling stock regardless of both the low and high level platforms. In this study, Structural analysis and mechanical strength test of doorstep equipments used for two types of platforms are performed on the supposition that the train only for the low level platform could stop in the both low and high level platforms.

• Journal of Korean Tunnelling and Underground Space Association
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• v.17 no.3
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• pp.353-362
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• 2015

Platform screen door (PSD) installed at underground subway station has reduced the safety accident, but it may cause poor air ventilation condition due to the isolated exhaust duct in the subway tunnel area. In this study, the additional ventilation system was suggested, which can be installed at a void space (i.e., storage room under stairs) of platform in order to improve efficiency of air ventilation rate. Exhausted air from platform was directed to underneath of platform and joined with existing ventilation duct of train exhaust system (TES). One subway station in Seoul city was selected to predict the effectiveness of the suggested lower exhaust system by using the computational fluid dynamics (CFD) analysis. The predicted mean age of air was decreased by 16.5% which proves the improvement of air ventilation efficiency when the suggested lower exhaust system was applied.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2002.11a
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• pp.65-70
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• 2002

지하철 역사에서의 신조명 방식을 적용(특히 승강장)하기 위하여, 우선 지하철역사의 조명 특성 및 현황을 살펴보고, 최근의 주요 신조명 방식 몇 가지를 점검해 본 후, 그중 현실적인 여건상 바람직한 조명이라고 생각되는 광파이프 조명을 중심으로 현재 일반적으로 설치된 형광등 조명 방식과 비교/검토해 보았다. 광파이프 국내공급사에서 입수한 조명 프로그램으로써 국내의 지하철 역사 승강장을 시뮬레이션 해본 결과로는, 광파이프 조명시스템(프리즘 방식)은 초기 투자가 너무 크고 효율적인 광원이 없어, 현재까지는 형광등조명보다도 약 배 이상 고비용이며 원래의 라인 조명으로서의 양호한 균제도 특성도 충분히 살리지 못하여 좀 더 발전시켜야 적합해질 것이라고 판단되었다.

• Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
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• v.9 no.9
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• pp.721-736
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• 2019

In this paper, the behavior of the fire smoke due to the operation of the ventilation systems when the fire occurred in the underground station (6 basement floors) and the tunnel at the great depth was measured. Fire smoke was generated by using a smoke generator which realized heat buoyancy effect by using hot air blower. The two locations of the fire were selected on the platform and on the platform of the tunnel located outside the screen door. A ventilation mode is generally used in which smoke is exhausted through a vent hole provided in a platform when a platform fire occurs. The tests were performed by operating the exhaust through the ventilation holes of the tunnel part located at both ends of the platform. The smoke density and the wind speed/velocity were measured at various positions, and the videos were taken to analyze the movement and smoke of the smoke. In both cases for fire inside the platform and in the railway tunnel, due to the ventilation mode operation of the fan for the platform and the exhaust of the fans in the tunnel smoke were well exhausted and the smoke propagation to the area near the smoke zone was suppressed. The smoke-control mode, which is applied to both fans for the platform and fans for in the tunnel at both ends of the platform, can provide a safer evacuation environment to the passengers from the fire smoke when the platform fire or fire train stops.

• Journal of Science and Technology Studies
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• v.10 no.2
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• pp.77-105
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• 2010

This essay aims to look into the possibility and limit of a technological fix with the PSD (platform screen door), which was proposed as the solution of subway risk problems. Subway risk problems may be classified into five categories-on-rail accidents, in-station accidents, platform accidents, spatial risks in underground, and risks due to a crime or terror-, and the platform accidents, which happens at the interface between the rail and the station, is the most serious and prominent. The PSD is considered as an effective technical means to prevent platform accidents. However, there remains a possibility of aggravating unexpected and invisible risks. When a fire breaks out in platforms, especially at exchange stations during the rush hour, the PSD can become a "wall of outcrying", since it may act as the "safety shutter" which killed many people in the 2003 Daegu subway disaster. This is why we need to look into the limit of a technological fix with the PSD.

• Journal of Korean Society of Environmental Engineers
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• v.28 no.6
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• pp.588-595
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• 2006

Indoor radon($^{222}Rn$) concentrations of subway stations in Seoul area were measured to survey the environmental indoor radon levels and to identify sources of radon. The radon concentration of indoor air by method of long-term measuring with a-track detector were surveyed at 232 subway stations from 1998 to 2004. And the radon concentration in ground-water was measured with a method of alpha particle counting. To trace main source of radon, 8 out of 232 stations were selected and their radon concentrations in tunnel and on platform were analyzed. Total geometric mean and arithmetic mean of radon concentrations in all stations from 1998 to 2004 were $1.40{\pm}1.94pCi/L,\;1.65{\pm}1.07$ respectively. Geometric means of radon concentrations on platform and concourse were $1.54{\pm}1.96pCi/L,\;1.23{\pm}1.88pCi/L$ respectively, with higher concentration at the platform than at the concourse. The geological structure was significantly correlated to the indoor radon concentration in subway stations region. Radon concentrations of adjacent tunnel and ground-water of subway station was significantly correlated to the indoor radon concentration in subway stations. And There was a significant difference in radon concentration, depending on the depth levels in platform of subway stations(p<0.05).

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2001.11a
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• pp.73-78
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• 2001

현재 많은 나라에서 지하철 역사에 승강장 스크린 도어(Platform Screen Door)를 설치하여 열차진입에 따른 승강장부의 공조환경 개선 및 승객의 안전을 확보하고자 하고 있다. 한국에서도 서울 지하철 9호선을 비롯하여 각 도시에서 PSD를 지하철 승강장부에 설치하는 노력이 시도되고 있으나, 이에 대한 검증은 전무한 실정이다 한국에서의 지하철 이용 분담율은 30％정도이며, 향후 약 50％까지 이를 것으로 예상되며, 이에 따라 PSD설비는 증가할 것으로 전망된다. 따라서 PSD 설치에 대한 지하철역사 환기 및 화재시의 배연설비에 대한 연구의 필요성은 날로 논아지고 있는 실정이다.(중략)