• Journal of Korean Tunnelling and Underground Space Association
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• v.17 no.3
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• pp.215-226
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• 2015

In this study, with variables the cross section area ($97m^2$, $58m^2$, $38m^2$) and the wind velocity(0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5 m/s), the time of getting off train dependent on the way of itself and the width of the evacuation route was analyzed, and also fire and evacuation characteristics is reviewed by cross section area of each wind velocity. As the result, if cross section become smaller, the density of harmful gases in the tunnel increased more than the ratio of decreasing cross section area. In the case of small cross sectional area, the surrounding environment from initial fire is indicated to exceed the limit criteria suggested in performance based design. In the analysis of effective evacuation time for evacuation characteristics, the effective evacuation time was the shortest in the case of evaluating effective evacuation time by the visibility. Also, there was significant difference between the effective evacuation time on the basis of performance based evaluation and the effective evacuation time obtained by analyzing FED (Fractional effective dose), one of the analysis method obtaining the point that deaths occur, against harmful gases.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2017.11a
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• pp.86-87
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• 2017

여객선의 안전은 인명의 안전과 직결되므로 이에 발맞추어 국제해사기구 (International Maritime Organization, IMO)는 빈번히 발생하는 선박의 전복 사고로 인한 인명 피해를 최소화하기 위하여 승객탈출분석 (Passenger Evacuation Analysis) 적용 지침을 꾸준히 개정 및 보완하고 있다. 승객탈출분석의 목적은 설계 단계에서의 탈출 설비의 배치 적합성 판단 및 배치된 탈출 설비를 이용하여 지침 상 규정하는 최대허용탈출시간 (Maximum allowable evacuation duration) 내에 탈출이 가능한 지를 분석하는 것이다. 본 논문에서는 승객탈출분석에 관한 지침의 개정 동향 및 최근 개정된 승객탈출분석 지침 (MSC.1/Circ.1533)의 개정 방향에 대하여 소개하고자 한다. 또한 탈출 해석 관점 한국해양과학기술원에서 개발 중인 인명대피안내시스템의 유효성을 검증하기 위하여 2016년 10월 수행 된 인명대피실험과 지침 상 규정하는 고도화 알고리즘 (Advanced algorithm) 기반 승객탈출 시뮬레이션 (Maritime EXODUS)의 비교 결과를 바탕으로 해당 지침 적용 시 고려사항에 대하여 고찰하고자 한다.

• Journal of Digital Convergence
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• v.10 no.7
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• pp.141-152
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• 2012

The typical evacuation guidance system based on fire detectors, which is being widely used in theaters and large buildings, is often operated in an analog manner. In case of fire, it often causes the system to lose a wired line or wireless fire detection sensor, resulting in the difficulty of transmitting signals from a wired or wireless fire detection sensor to the main fire monitoring device. Accordingly, this paper has proposed the broadcasting system for disaster management, having an efficient evacuation guidance plan when a disaster occurs. The system reacts to an emergency situation along with fire alarm sirens in real time. We have implemented the above system by means of a simulation program that prints the evacuation guidance information (e.g., location and time of fire, and evacuation path) on an LCD located in a building through the fire sensor network in case of an emergency (e.g., actual fire). We have developed the simulation system by using mathematical algorithms, such as the optimal path search and the fire smoke diffusion algorithm. This simulation program considers the structure of a building and the location where the fire has initially occurred, applying it to the simulator.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2010.04a
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• pp.267-272
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• 2010

전 세계적으로 수많은 고층 건축물이 건설되고 있다. 건축물의 높이가 높아질수록 비상시 필요로 하는 유효 피난길이와 총 피난시간은 점점 길어진다. 일반적으로 건축물에서의 피난은 지상층의 안전한 공간으로 대피하는 것을 의미하는데 고층 또는 초고층 건축물의 대규모 수직적 공간에서는 하향식 피난뿐만 아니라 상향식 피난도 고려되어야 한다. 이를 위해 본 연구에서는 고층 아파트 1개소를 선정하여 수직적 이동방향에 따른 실물 피난실험을 실시하여 피난특성을 관찰하였다. 본 실험에서 피난자 개개인의 특성을 파악하기 위해 피난자들이 지상층에 도착하자마자 설문조사를 실시하여 피난행동간 개인 고유의 행동데이터를 수집하였고 이를 PASW 18을 활용하여 통계적 해석을 실시하였다.

• Journal of the Korean Society for Railway
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• v.19 no.4
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• pp.555-563
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• 2016

Line capacity of railways is a core criterion to decide maximum trips in accordance with traffic demand and a priority in railway investment to improve transportation capability. Particularly, because two operators will start revenue services in the HSR from mid-2016, the line capacity should be carefully calculated and controlled to avoid conflicts between the maximum number of KTXs, and the number needed to guarantee the effective competition of the operators. Meanwhile, there have been many arguments about calculating the line capacity, because this number is affected by the number of trips by train types, stopping pattern and dwell time in each station, journey time, crossing or passing, safety headway between trains, etc. To deal successfully with these kinds of problems, this study proposes a simulation method to calculate the line capacity that considers train operation according to the operator's service policies.