Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
권호 표지
DOI QR코드

DOI QR Code

Analysis on inundation characteristics by compound external forces in coastal areas

연안 지역의 복합 외력에 의한 침수 특성 분석

  • Kang, Taeuk (Disaster Prevention Research Institute, Pukyong National University) ;
  • Sun, Dongkyun (Disaster Prevention Research Institute, Pukyong National University) ;
  • Lee, Sangho (Department of Civil Engineering, Pukyong National University)
  • 강태욱 (부경대학교 방재연구소) ;
  • 선동균 (부경대학교 방재연구소) ;
  • 이상호 (부경대학교 공과대학 토목공학과)
  • Received : 2021.03.15
  • Accepted : 2021.05.12
  • Published : 2021.07.31
Download PDF
⟨ Previous Next ⟩

Abstract

The various external forces can cause inundation in coastal areas. This study is to analyze regional characteristics caused by single or compound external forces that can occur in coastal areas. Storm surge (tide level and wave overtopping) and rainfall were considered as the external forces in this study. The inundation analysis were applied to four coastal areas, located on the west and south coast in Republic of Korea. XP-SWMM was used to simulate rainfall-runoff phenomena and 2D ground surface inundation for watershed. A coupled model of ADCIRC and SWAN (ADCSWAN) was used to analyze tide level by storm surge and the FLOW-3D model was used to estimate wave overtopping. As a result of using a single external force, the inundation influence due to storm surge in most of the coastal areas was greater than rainfall. The results of using compound external forces were quite similar to those combined using one external force independently. However, a case of considering compound external forces sometimes created new inundation areas that didn't appear when considering only a single external force. The analysis considering compound external forces was required to reduce inundation damage in these areas.

연안 지역은 강우, 조위, 월파 등 여러가지 외력에 의해 침수가 발생될 수 있다. 이에 이 연구에서는 연안 지역에서 발생될 수 있는 단일 및 복합 외력에 의한 지역별 침수 특성을 분석하였다. 연구에서 고려한 외력은 강우와 폭풍 해일에 의한 조위 및 월파이고, 분석 대상지역은 남해안 및 서해안의 4개 지역이다. 유역의 강우-유출 및 2차원 지표면 침수 분석에는 XP-SWMM이 사용되었고, 폭풍 해일에 의한 외력인 조위 및 월파량 산정에는 ADCSWAN (ADCIRC와 UnSWAN) 모형과 FLOW-3D 모형이 각각 활용되었다. 단일 외력을 이용한 분석 결과, 대부분의 연안 지역에서는 강우에 의한 침수 영향보다 폭풍 해일에 의한 침수 영향이 크게 나타났다. 복합 외력에 의한 침수 분석 결과는 대체로 단일 외력에 의한 침수 모의결과를 중첩시켜 나타낸 결과와 유사하였다. 다만, 특정 지역에서는 복합 외력을 고려함에 따라 단일 외력만을 고려한 침수모의에서 나타나지 않았던 새로운 침수 영역이 발생하기도 하였다. 이러한 지역의 침수 피해 저감을 위해서는 복합 외력을 고려한 분석이 요구되는 것으로 판단되었다.

Keywords

Acknowledgement

본 논문은 행정안전부 극한 재난대응 기반기술 개발사업의 일환인 "해안가 복합재난 위험지역 피해저감 기술개발(연구과제번호: 2018-MOIS31-008)"의 지원으로 수행되었습니다.

References

  1. Chen, X., Ji, P., Wu, Y., and Zhao, L. (2017). "Coupling simulation of overland flooding and underground network drainage in a coastal nuclear power plant." Nuclear Engineering and Design, Vol. 325, pp. 129-134. https://doi.org/10.1016/j.nucengdes.2017.09.028
  2. Choi, G., Song, Y., and Lee, J. (2018a). "Analysis of flood occurrence type according to complex characteristics of coastal cities." 2018 Conference of the Korean Society of Hazard Mitigation, KOSHAM, p. 180.
  3. Choi, J., Park, K., Choi, S., and Jun, H. (2018b). "A forecasting and alarm system for reducing damage from inland inundation in coastal urban areas: A case study of Yeosu City." Journal of Korean Society of Hazard Mitigation, Vol. 18, No. 7, pp. 475-484. https://doi.org/10.9798/KOSHAM.2018.18.7.475
  4. Han, H., Kim, Y., Kang, N., and, Kim, H.S. (2014). "Inundation analysis of a coastal urban area considering tide level." 2014 Conference of Korean Society of Civil Engineers, KSCE, pp. 1507-1508.
  5. Kang, T., Lee, S., and Sun, D. (2019a). "A technical review for reducing inundation damage to high-rise and underground-linked complex buildings in Coastal Areas (1): Proposal for analytical method." Journal of Korean Society of Hazard Mitigation, Vol. 19, No. 5, pp. 35-43. https://doi.org/10.9798/kosham.2019.19.5.35
  6. Kang, T., Lee, S., Choi, H., and Yoon, S. (2019b). "A technical review for reducing inundation damage to high-rise and undergroundlinked complex buildings in coastal areas (2): Case analysis for application." Journal of Korean Society of Hazard Mitigation, Vol. 19, No. 5, pp. 45-53. https://doi.org/10.9798/kosham.2019.19.5.45
  7. Kim, J.O., Kim, J.Y., and Lee, W.H. (2016). "Analysis on complex disaster information contents for building disaster map of coastal cities." Journal of the Korean Association of Geographic Information Studies, Vol. 19, No. 3, pp. 43-60. https://doi.org/10.11108/KAGIS.2016.19.3.043
  8. Kim, P.J. (2018). Improvement measures on the risk area designation of coastal disaster in consideration of natural hazards. Ph.D. dissertation, Chonnam National University.
  9. Korean Society of Civil Engineers (KSCE) (2021). A report on the cause analysis and countermeasures establishment for Dongcheon flooding and lowland inundation. Busan/Ulsan, Gyungnam branch.
  10. Lee, S., Kang, T., Sun, D., and Park, J.J. (2020). "Enhancing an analysis method of compound flooding in coastal areas by linking flow simulation models of coasts and watershed." Sustainability, Vol. 12, No. 16, 6572. https://doi.org/10.3390/su12166572
  11. Ministry of Environment (ME) (2011). Standard for sewerage facilities. Korea Water and Wastewater Works Association.
  12. Ministry of Land, Transport and Maritime Affairs (MLTM) (2011). Improvement and complementary research for probability rainfall.
  13. Ministry of the Interior and Safety (MOIS) (2017). Criteria for establishment and operation of disaster prevention performance target by region: Considering future climate change impacts.
  14. Song, Y., Joo, J., Lee, J., and Park, M. (2017). "A study on estimation of inundation area in coastal urban area applying wave overtopping." Journal of Korean Society of Hazard Mitigation, Vol. 17, No. 2, pp. 501-510. https://doi.org/10.9798/KOSHAM.2017.17.2.501
  15. Suh, S.W., and Kim, H.J. (2018). "Simulation of wave overtopping and inundation over a dike caused by Typhoon Chaba at Marine City, Busan, Korea." Journal of Coastal Research, Vol. 85, pp. 711-715. https://doi.org/10.2112/si85-143.1
  16. Sun, D. (2021). Sensitivity analysis of XP-SWMM for inundation analysis in coastal area. M.Sc. Thesis, Pukyong National University.