• Fire Science and Engineering
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• v.20 no.3 s.63
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• pp.15-20
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• 2006

In this study the flow characteristics of smoke and heat on a bank type platform of the underground subway station are studied numerically by considering two different emergency operation modes. Effects of the natural flow through the tunnel and the stair ways are considered in the numerical simulations by using the measured velocities presented in Part I as the boundary condition. Distributions of heat, smoke, visible range and toxic gas on the platform are analysed for different smoke extraction flowrates corresponding to the two different emergency operation modes. The numerical results show that the extraction flowrate affects the smoke control performance significantly by improving the smoke removal performance as the extraction flowrate is increased.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2005.11a
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• pp.234-240
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• 2005

• Proceedings of the KSR Conference
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• 2008.06a
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• pp.1773-1780
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• 2008

When the fire occur in the deeply underground subway station, the difficulties of passenger evacuation are expected because of many stairs to the exit. In this study, SOONGSIL-University station (7 line, 47m depth) is the one of the deepest subway stations of the each line in the Seoul metro. The numerical computational-simulation was performed for the fire driven flow in the subway station. Hot and smoke flow was analyzed from the simulation results. The proper plan of evacuation against fire was considered through the results. The fire driven flow was simulated using FDS code in which LES method was applied. The Heat Release Rate was 10MW and the ultrafast model was applied for the growing model of the fire source. The proper mesh size was determined from the characteristic length of fire size. The parallel computational method was employed to compute the flow and heat eqn's in the meshes, which are about 10,000,000, with 6cpu of the linux clustering machine.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.7
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• pp.3220-3226
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• 2011

In order to monitor internal risk factors such as fire, terror, etc. on the subway station, the surveillance systems using CCTV and various kinds of sensors have been implemented and recently, introduction of surveillance systems using an advanced IT technology, sensor network technology is tried on several areas. Since 2007, Korean government has made an effort to develop the intelligent surveillance and monitoring system, which can monitor fire, intrusion, passenger congestion, health-state of structure, etc., by using wireless sensor network technology and intelligent video analytic technique. For that purpose, this study carried out field wireless communication environment test on Chungmuro Station of Seoul Metro on the basis of ZigBee that is considered as a representative wireless sensor network before field application of the intelligent integrated surveillance system being developed, arranged and analyzed and ZigBee based wireless communication environment test results on the platform and waiting room of Chungmuro Station on this paper. Results of wireless spectrum analysis on the platform and waiting room showed that there is no radio frequency overlapped with that of ZigBee based sensor network and no frequency interference with adjacent frequencies separated 10MHz or more. As results of wireless data transmission test using ZigBee showed that data transmission is influenced by multi-path fading effect from the number and flow rate of passengers on the platform or the waiting room rather than effects from entrance and exit of the train to/from the platform, it should be considered when implementing the intelligent integrated surveillance system on the station.

• 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.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2005.05a
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• pp.190-196
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• 2005

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2007.04a
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• pp.345-348
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• 2007

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2008.11a
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• pp.239-244
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• 2008

일반적인 피난모델은 건물 화재시의 상황을 예측해보기 위해 제작된 것들이다. 이들을 사용하여 철도차량 내부에서의 피난상황을 예측해보기 위해서는 각 출입문에서의 유동에 대한 연구가 필요하다. 특히 터널 내 정차와 같이 차량바닥과 지면의 차이가 존재하는 경우는 현재 자료가 없는 상황이다. 이는 철도차량뿐만 아니라 차량에서 나간이후에 경유하게 되는 터널이나 역사의 피난을 평가하는 데도 매우 중요한 자료이다. 그러므로 본 연구에서는 지하철 차량에서의 피난 현상 중에서 차량과 차량간의 이동과 차량에서 선로로의 이동에 대한 현상을 실험을 통해 분석해보았다.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2007.04a
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• pp.367-371
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• 2007

최근 여러 지역에서 발생되는 지하철 참사 및 대형화재 또는 지하철 역사, 대형 지하상가, 백화점, 지하공간, 대형쇼핑센터, 숙박업소, 공공건물등 대형 다중이용시설 등에서 발생될 수 있는 예측 불가능한 인재, 천재지변에 안전하게 대피하기 위한 수단으로 비상등 및 여러 감지기들이 소방법 개정으로 의무설치 하고 있다. 비상등 및 감지기들은 비상시 위험 감지 및 경고 전파를 위해 사용되는데 방음벽이나 격벽, 경고 거리의 제한으로 인해 경고 전달의 어려움이 있다. 본 논문에서는 무선 데이터 전송기능 및 경고등, 음성전파 기능을 갖는 무선 지능형 화재 감지/경고시스템을 설계하고자 한다.

• Journal of the Korean Professional Engineers Association
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• v.37 no.3
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• pp.38-41
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• 2004

지난 4월 22일 발생한 북한의 룡천역 폭발사고로 인하여 사망자수 150여명, 부상자수 1,300여명에 달하는 엄청난 재해가 발생하였다고 전해지고 있다. 룡천역을 중심으로 반경 500m 파일이 완파되었으며, 폭발 영향권도 4km에 달하였고 반경 500m 안에는 역사와 학교 및 4-5층 규모의 아파트가 다수 있었기에 피해 규모가 더욱 컸다고 알려 졌다. 1990년대 들어 우리나라도 심대한 대형 재난사고를 당하였다. 성수대교 붕괴(1994), 대구지하철 공사장 가스폭발(1995), 삼풍백화점 붕괴(1995), 대구지하철 화재(2003) 등 잇따른 대형 참사는 우리의 위기관리 현실을 되돌아보게 하였고, 국민들은 언제 발생할지 모를 재난에 대한 불안감으로 그 어느 때보다 안전한 나라에 대한 열망이 강한 것이 사실이다.(중략)