DOI QR코드

DOI QR Code

Cause Analysis and Improvement Suggestion for Flood Accident in Dorimcheon - Focused on the Tripping and Isolation Accidents

도림천에서 발생한 고립 및 실족사고의 원인분석을 통한 개선방안 도출에 관한 연구

  • Lee, Kyung-Su (Disaster Scientific Investigation Division, National Disaster Management Research Institute) ;
  • Jeon, Jong-Hyeong (Disaster Management Cooperation Office, Ministry of the Interior and Safety) ;
  • Kim, Tai-Hoon (Disaster Scientific Investigation Division, National Disaster Management Research Institute) ;
  • Kim, Hyunju (Disaster Scientific Investigation Division, National Disaster Management Research Institute)
  • 이경수 (행정안전부 국립재난안전연구원) ;
  • 전종형 (행정안전부 재난협력실) ;
  • 김태훈 (행정안전부 국립재난안전연구원) ;
  • 김현주 (행정안전부 국립재난안전연구원)
  • Received : 2021.01.18
  • Accepted : 2021.04.02
  • Published : 2021.04.30

Abstract

This study analyzed the causes of flood accidents, such as isolation and lost footing accidents in Dorimcheon, to provide legal and institutional improvements. For cause analysis, Field Investigation, Stakeholder Interview, Report, manual, Law et al. Review, Analysis of water level change characteristics, automatic alarm issuance standard level analysis, and evacuation time according to river control were evaluated. Dorimcheon has the characteristics of a typical urban river, which is disadvantageous in terms of water control. In addition, the risk of flood accidents is high because the section where fatal accidents occur forms sharply curved channels. Tripping and isolation accidents occur in the floodplain watch and evacuation stage, which is the stage before the flood watch and warning is issued. Because floodplain evacuation is issued only when the water level rises to the floodplain, an immediate response according to the rainfall forecast is essential. Furthermore, considering that the rate of water level rise is up to 2.62 cm/min in Sillimgyo 3 and Gwanakdorimgyo, sufficient evacuation time is not secured after the floodplain watch is issued. Considering that fatal accidents occurred 0.46 m below the standard water level for the flood watch, complete control is very important, such as blocking the entry of rivers to prevent accidents. Based on these results, four improvement measures were suggested, and it is expected to contribute to the prevention of Tripping and Isolation Accidents occurring in rivers.

본 연구는 도림천에서 발생한 고립 및 실족과 같은 수난사고의 근본적인 원인을 분석하고, 법·제도적인 개선방안을 제시하였다. 원인분석을 위하여 현장확인, 관계자 인터뷰, 관련자료 검토, 강우량과 하천 횡단면의 수위와의 관계, 자동경보 발령 기준수위의 적정성 및 진·출입 통제에 따른 대피시간 확보 가능여부 등을 평가 하였다. 도림천은 전형적인 도시하천의 특성을 띄고 있어 치수적으로 불리하며, 사망사고가 발생한 구간은 급만곡부를 형성하고 있는 등 고립사고 발생 위험이 높다. 고립 및 실족사고는 홍수주의·경보 발령 전 단계인 둔치주의·대피 단계에서 발생하고 둔치대피 발령은 둔치턱까지 수위가 상승해서야 발령되기 때문에 있기 때문에 강우예보에 따른 수위상승에 대한 즉각적인 대응이 중요하다. 또한, 수위 상승속도가 신림3교와 관악도림교에서 최대 2.62 cm/min임을 고려하였을 때 둔치경보 발령 후 충분한 대피시간을 확보하고 있지 못하다. 사망사고는 둔치주의 발령 기준수위보다 0.46 m이하에서 발생한 점을 보았을 때, 하천의 진·출입 등 통제가 사고 예방을 위해서는 매우 중요하다. 이러한 분석결과를 바탕으로 4건의 개선방안을 제시하였으며, 고립 및 실족과 같은 수난사고를 예방하는데 크게 기여할 수 있을 것으로 기대한다.

Keywords

References

  1. Korea Coast Guard(KCG), Act on The Search and Rescue, etc. in Waters, National Law Information center, p.29, Korea Ministry of Government Legislation, 2019, p.1.
  2. Ministry of the Interior and Safety(MOIS), Disaster Yearbook 2018, National Statistics Report, MOIS, Korea, pp.229-313.
  3. Ministry of the Interior and Safety(MOIS), Disaster Yearbook 2017, National Statistics Report, MOIS, Korea, pp.211-301.
  4. Ministry of the Interior and Safety(MOIS), Disaster Yearbook 2016, National Statistics Report, MOIS, Korea, pp.291-386.
  5. Ministry of Fublic Safety and Security(MPSS), Disaster Yearbook 2015, National Statistics Report, MPSS, Korea, pp.273-365.
  6. Ministry of Fublic Safety and Security(MPSS), Disaster Yearbook 2014, National Statistics Report, Ministry of Fublic Safety and Security, Korea, pp.342-431.
  7. Ministry of Fublic Safety and Security(MPSS), Disaster Yearbook 2013, National Statistics Report, MPSS, Korea, pp.47-386.
  8. Ministry of Fublic Safety and Security(MPSS), Disaster Yearbook 2012, National Statistics Report, MPSS, Korea, pp.47-379.
  9. National Emergency Management Aagency(NEMA), Disaster Yearbook 2011, National Statistics Report, NEMA, Korea, pp.309-576.
  10. National Emergency Management Aagency(NEMA), Disaster Yearbook 2010, National Statistics Report, NEMA, Korea, pp.4.1-4.224.
  11. National Emergency Management Aagency(NEMA), Disaster Yearbook 2009, National Statistics Report, National Emergency Management Aagency, Korea, pp.285-583.
  12. National Emergency Management Aagency(NEMA), Disaster Yearbook 2008, National Statistics Report, NEMA, Korea, pp.325-424.
  13. J. G. Kim, D. S. Lee, J. Y. Cho, S. Han, T. H. Kim, "Introduction of perception on ICT to respond social disasters", Journal of the Korea Society of Disaster Information, Vol.12, No.3, pp.249-260, Aug. 2016. DOI: http://dx.doi.org/10.15683/kosdi.2016.9.30.249
  14. J. G. Kim, D. S. Lee, J. H.Lee, S. Han, J. B. Ho, "Review of Features and Response system for Unintentional Drowning in Korea", Journal of the Korea Society of Disaster Information, Vol.13, No.1, pp.118-129, March 2016. DOI: https://dx.doi.org/10.15683/kosdi.2017.03.31.118
  15. B. H. Lim, C. H. Lee, N. S. Ji, "A Study on the User Satisfaction and Satisfaction Factors for Waterfront in Urban Area: Focused on Three Major Rivers in Daejeon Metropolitan Area.", The Geographical Journal of Korea, Vol.50, No.2, pp.175-183, May 2016.
  16. K. O. Baek, A Plan for Preventing a Disaster by Water at Imjin River, Policy Research, Gyeonggi Research Institute, Korea, pp.1-3.
  17. H. J. Yoo, S. I. Jeong, D. H. Kim, S. O. Lee, "Evaluation of Velocity Correction Factor in Image Process for Estimating the Distressed Location in Flood Event", Journal of Korean Society of Hazard Mitigation, Vol.16, No.5, pp.311-316, Oct. 2016. DOI: http://dx.doi.org/10.9798/KOSHAM.2016.16.5.311
  18. Seoul Regional Construction and Management Administration(SROCM), Anyangcheon Area River Master Plan Report, Official Publication, Ministry of Land, Infrastructure and Transport(MOLIT), Korea, pp.3.1-3.2, 4.232-4.237.
  19. Y. I. Moon, A Study on the Construction of Flood Predction System in Dorimcheon, Policy Research, Seoul Special City, Korea, pp.3.11, 3.13.
  20. H. S. Woo, K. K. Yu, J. K. Park, "A Preliminary Study of the Hydraulic-Geometrical Relations of Bed Slope in Some Selected Alluvial Rivers", Journal of Korean Geographical Society, Vol.29, No.3, pp.253-265. 1994.
  21. GwanakGu, River Forecasting and Warning System Operation Manual, GwanakGu, Korea, pp.1-3
  22. Korea Meteorological Administration(KMA). Daily Rainfall data in Automatic Weather System [Internet]. KMA, 2017-2019 [Cited 2019 Sep. 5, 2018 July 2, 2017 Aug. 15, 2017 July. 10], Available From : https://www.weather.go.kr/weather/observation/aws_table_popup.jsp (accessed Jan. 6, 2020)
  23. GwanakGu, Water level data[Internet]. GwanakGu, 2017-2019 [Cited 2017 July 10, 2017 Aug. 15, 2018 July 2. 2019 Sep. 5], Available From : http://smart.gwanak.go.kr (accessed Jan. 6, 2020)
  24. Ministry of Environment(ME), Act on The Investigation, Planning, and Management of Water Resources, p.10, ME, 2020, p.1.
  25. Ministry of Environment(ME), Enforcement Regulations of The Act on The Investigation, Planning, and Management of Water Resources, p.4, ME, 2020, p.2.
  26. Ministry of Environment(ME), Ministry of Land, Infrastructure and Transport(MOLIT), River Act, p.32, ME, 2020, p.1.
  27. Hydrologic Engineering Center(HEC), HEC-RAS, River Analysis System, User's manual, ver. 3.1.2, U.S. Army Corps of Engineers, America, pp.1.1-1.5.
  28. S. Han, H. S. Shin, S. Kim, Improvement in Stream Hydraulic Characteristics Estimation Method for Modeling Water Quality: Focusing on QualKo, Journal of Wetlands Research, Vol.10, No.1, pp.11-20. Apr. 2008.
  29. S. J. Kim, G. T. Kim, J. H. Jeong, S. O. Han, Flood Inundation Scenario Development and Analysis Using HEC-HMS/RAS and HEC-GeoRAS Models, Journal of Korean Society of Hazard Mtigation, Vol.13, No.4, pp.199-205. Aug. 2013. DOI: http://dx.doi.org/10.9798/KOSHAM.2013.13.4.199
  30. K. W. Jun, Analysis of Flood Level Variation in Oship Stream Using HEC-RAS : Focuses on the Impact of the Typhoon Sanba, Journal of The Korea Contents Society, Vol.13, No.2, pp.498-504. Feb. 2013. DOI: http://dx.doi.org/10.5392/JKCA.2013.13.02.498
  31. S. Kim, S. Hong, B. Yoon, U. J, Feasibility Analysis of HEC-RAS for Unsteady Flow Simulation in the Stream Channel with a Side-Weir Detention Basin, Journal of Korea Water Resources Association, Vol.45, No.5, pp.495-503. May 2012. DOI: http://dx.doi.org/10.3741/JKWRA.2012.45.5.495
  32. Korea Water Resources Association(KWRA), River Design Standards and Explantion, p.590, Ministry of Land, Transport and Maritime Affairs, 2009, p.93-100.
  33. Ministry of the Interior and Safety(MOIS), Framework Act on the Management of Disasters and Safety, p.42, MOIS, 2020, p.23.