• Title/Summary/Keyword: 화재안전진단

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Performance-Based Evaluation on Evacuation Safety of Road Tunnels Considering Fire Size and Evacuation Exit (화재 크기와 피난연결통로를 고려한 도로터널의 성능기반 피난안전성 평가)

  • Si-Hyun Oh;In-Wook Heo;Sang-Ki Lee;Seung-Ho Choi;Sunnie Haam
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.28 no.4
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    • pp.28-36
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    • 2024
  • In this study, an analytical evaluation of evacuation safety in typical road tunnels was conducted. The Fire Dynamics Simulator (FDS) was employed to perform fire simulations with varying fire sizes to determine the allowable evacuation time in road tunnels. Additionally, evacuation simulations were performed using Pathfinder, considering the width of barrier doors and the spacing of evacuation passageways, to calculate the required evacuation time. A comparison between the allowable and required evacuation times was conducted to assess the impact of fire size, passageway spacing, and barrier door width on tunnel evacuation safety. The results from the fire and evacuation simulations indicated that an increase in fire size and passageway spacing, along with a decrease in door width, resulted in an increase in the number of casualties. Conversely, increasing the barrier door width to more than 1.2meters led to a reduction in casualties as passageway spacing increased.

Fire Evacuation Simulation Using FFM and FDS (FFM과 FDS를 이용한 화재 대피 시뮬레이션)

  • LEE, Jae-Young;LEE, Min-Hyuck;JUN, Chul-Min
    • Journal of the Korean Association of Geographic Information Studies
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    • v.21 no.2
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    • pp.56-67
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    • 2018
  • In general, fire and evacuation simulators are used independently to diagnose the safety of building. Because this method does not reflect the movement of pedestrians considering fire spread, it is difficult to expect diagnosis of safety with high accuracy. In this study, we propose the simulation method that can describe the movement of pedestrians in the fire emergency. Our method reflects the FDS fire spread data into FFM and explains the situation in which a pedestrian recognize a fire and escapes to a safe route. This study consists of data linkage between FDS and FFM and development of improved FFM. Experiment of the proposed method is progressed using the EgresSIM. Simulation result shows that the number of evacuees on each exit is affected by the presence or absence of fire and it was confirmed that the evacuation time increase and the bottleneck phenomenon deepened by exit.

The UV Images and Electrical Characteristics of Corona Discharge for Aging Diagnosis of Power Facility (전력설비의 열화진단을 위한 코로나 방전의 자외선 이미지와 전기적 특성)

  • Choi, Jae-Hyeeong;Pang, Man-Sik;Kim, Woo-Jin;Kim, Young-Seok;Kim, Sang-Hyun
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 2011.11a
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    • pp.409-412
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    • 2011
  • 최근, 전력설비의 열화진단 및 안전검사에 있어 편의성과 활용성의 측면에서 자외선 카메라가 많은 관심을 받고 있다. 자외선 카메라는 전력설비의 코로나 방전에 의한 자외선 검출을 응용한 기기로서 열화지점과 열화정도를 이미지 형태로 직관적으로 나타낼 수 있다. 따라서 전력설비의 정확한 열화진단을 위해서는 코로나 방전에 대한 전기적 특성과 자외선 특성에 대한 이해가 중요하다. 본 논문에서는 전력설비의 열화진단을 위한 코로나 방전을 모의하고, 그에 따른 자외선 이미지와 전기적 특성에 관해 연구하였다.

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