Journal of Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회논문집)

Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회)
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Numerical Simulation of Coastal Urban Inundation due to Storm Surge and Rainfall

폭풍해일과 강우에 의한 해안 도시 범람 수치모의

  • Kim, Gun Hyeong (Dept. of Civil & Env. Engrg., Graduate School, Hanyang University) ;
  • Pyo, Chang Kyu (Dept. of Civil & Env. Engrg., Graduate School, Hanyang University) ;
  • Yoon, Sung Bum (Dept. of Civil, Env. and Plant Engrg., ERICA Campus, Hanyang University)
  • 김건형 (한양대학교 대학원 건설환경공학과) ;
  • 표창규 (한양대학교 대학원 건설환경공학과) ;
  • 윤성범 (한양대학교 건설환경플랜트공학과)
  • Received : 2014.10.25
  • Accepted : 2014.12.29
  • Published : 2014.12.31
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Abstract

In this study, numerical simulations are conducted for the inundations due to storm surge and rainfall at Masan City of Korea where severe damages occurred by the typhoon Maemi. A coupled numerical model which can deal with various flow patterns such as storm surge, rainfall and sewer flows is employed. The numerical results show that the inundation area and depth increase significantly when the combined effects of storm surge and rainfall are considered in comparison with those obtained without a rainfall effect. Further numerical simulations are conducted to evaluate the performance of the sea wall being constructed for the coastal defence. The results show that the maximum inundation depths decrease when the sea wall is constructed. However, the duration of inundation becomes longer, because the rainwater on the ground cannot be discharged easily to the sea due to the presence of the sea wall.

본 연구에서는 태풍 매미에 의해 큰 피해를 입은 마산지역을 대상으로 폭풍해일과 강우에 의한 범람 수치모의를 수행하였다. 이를 위해 폭풍해일-강우-우수관망 결합 수치모형을 사용하였다. 그 결과, 기존의 폭풍해일만을 이용하였을 경우보다 강우와 우수관망 수치모형을 고려하였을 때의 침수면적 및 침수고가 크게 증가한 것을 확인하였다. 또한 마산시에서 추진 중인 방재언덕을 설치하였을 때의 침수범람결과를 추가적으로 수치모의 하여 방재언덕의 실효성을 검토하였다. 그 결과 방재언덕의 영향으로 폭풍해일에 의한 최대 침수심은 저감되었으나, 우수가지상부에서 바다로 원활하게 배수되지 못해 침수지속기간이 증가하는 것을 확인하였다.

Keywords

References

  1. Choi, B.H., Eom, H.M., Kim, H.S., Jung, W.M. and Shim, J.S. (2004). Wave-Tide-Surge Coupled Simulation for Typhoon Maemi. Workshop on waves and storm surges around Korean peninsula, Journal of Korean Society of Coastal and Ocean Engineers, 121-144 (in Korean).
  2. Chun, J.Y., Lee, K.H., Kim, J.M., Kim, D.S. and Bae, K.S. (2008). Inundation Analysis on Coastal Zone around Masan Bay by Typhoon Maemi (No. 0314). Journal of Ocean Engineering and Technology, 22(3), 8-17 (in Korean).
  3. Hur, D.S., Yeom, G.S., Kim, J.M., Kim, D.S. and Bae, K.S. (2006a). Estimation of Storm Surges on the Coast of Busan. Journal of Ocean Engineering and Technology, 20(3), 37-44 (in Korean).
  4. Hur, D.S., Yeom, G.S., Kim, J.M., Kim, D.S. and Bae, K.S. (2006b). Storm Surge Characteristics According to the Local Peculiarity in Gyeongnam Coast. Journal of Ocean Engineering and Technology, 20(3), 45-53 (in Korean).
  5. Kang, Y.K., Tomita, T., Kim, D.S. and Ahn, S.M. (2004). Characteristics of Flood Damage by Storm Surge and High Waves in Southeast Coast Area during Typhoon Maemi Attack. Workshop on waves and storm surges around Korean peninsula, Journal of Korean Society of Coastal and Ocean Engineers, 35-43 (in Korean).
  6. Kang, Y.Q. (2004). Storm Surge Resonance During the Passage of Typhoon 'Maemi' Waves and Storm Surges around Korean Peninsula. Workshop on waves and storm surges around Korean peninsula, Journal of Korean Society of Coastal and Ocean Engineers, 57-62 (in Korean).
  7. Kawai, H., Tomita, T., Hiraishi, T., Kim, D.S. and Kang, Y.K. (2004). Hindcasting and Field Investigation of Storm Surge in Masan Bay, Korea by Typhoon 0314. Annual Journal of Coastal Engineering, JSCE, 51, 1361-1365. https://doi.org/10.2208/proce1989.51.1361
  8. Kawai, H., Kim, D.S., Kang, Y.K., Tomita, T. and Hiraishi, T. (2005). Hindcasting of Storm Surge at Southeast Coast by Typhoon Maemi. Journal of Ocean Engineering and Technology, 19(2), 12-18 (in Korean).
  9. Kim, D.S., Kim, J.M., Lee, G.H. and Lee, S.D. (2007). Inundation Analysis Considering Water Waves and Storm Surge in the Coastal Zone. Journal of Korean Society of Ocean Engineers, Korean Society of Ocean Engineers, 21(2), 35-41 (in Korean).
  10. Kim, M.K., Kim, J.H. and Yoon, J.S. (2010) Study of Inundation Flow Model Consider of Sewerage System in Masan. Proceeding of 2010 Conference of Korea Association of Ocean Science and Technology, Jeju, Korea, 2297-2300 (in Korean).
  11. Mituyasu, H. and Kusaba, T. (1984). Drag Coefficient over Water Surface under the Action of Strong Wind. Journal of Natural Disaster Science, 6(2), 43-50.
  12. Myers, V. A. and Malkin, W. (1961). Some Properties of Hurricane Wind Fields as Deduced from Trajectories. U.S. Weather Bureau, National Hurricane Research Project, Report 49.
  13. Park, N.J., Kim, M.K. and Yoon, J.S. (2009). Study of Inundation Flow Model Consider of Sewerage System in Masan. Proceedings of Coastal and Ocean Engineering in Korea, Korean Society of Coastal and Ocean Engineers, 18, 121-123 (in Korean).
  14. Suh, S.W. and Kim, H.J. (2012). Typhoon Surge Simulation on the West Coast Incorporating Asymmetric Vortex and Wave Model on a Fine Finite Element Grid. Journal of Korean Society of Coastal and Ocean Engineers, 24(3), 166-178 (in Korean). https://doi.org/10.9765/KSCOE.2012.24.3.166
  15. Suh, S.W. and Lee, H.Y. (2012). Inundation Simulation on a Vertical Dock Using Finite Element Storm Surge Model. Journal of Korean Society of Coastal and Ocean Engineers, 24(4), 235-246 (in Korean). https://doi.org/10.9765/KSCOE.2012.24.4.235
  16. Yoon, S.B., Lee, J., Kim, K.H. and Song, J.H. (2014) Development of storm sewer numerical model for simulation of coastal urban inundation due to storm surge and rainfall. Journal of Korean Society of Coastal and Ocean Engineers, 26(5), 292-299 (in Korean). https://doi.org/10.9765/KSCOE.2014.26.5.292
  17. Yoon, S.B. and Lee, K.H. (1997a). Development of Numerical Model for Unsteady Flow Analysis in Discharge Culvert of Thermal Power Plant: I. Model Setup. Journal of Korea Water Resources Association, Korea Water Resources Association, 30(6), 761-768 (in Korean).
  18. Yoon, S.B. and Lee, K.H. (1997b). Development of Numerical Model for Unsteady Flow Analysis in Discharge Culvert of Thermal Power Plant: II. Model Application. Journal of Korea Water Resources Association, Korea Water Resources Association, 30(6), 769-776 (in Korean).