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2020 Vol.53, Issue 4

Research Article

Appropriateness analysis of design rainfall factors using the rainfall data of an inundated flood events

침수 홍수사상의 강우자료를 활용한 설계강우 요소의 적정성 분석

Byeong-Wook Yua
,
Seon-Ho Kimb
,
Deg-Hyo Baec*
유 병욱a
,
김 선호b
,
배 덕효c*
aPh. D. Student, Department of Civil & Environmental Engineering, Sejong University
bPh. D. Candidate, Department of Civil & Environmental Engineering, Sejong University
cProfessor, Department of Civil & Environmental Engineering, Sejong University
a세종대학교 건설환경공학과 박사과정
b세종대학교 건설환경공학과 박사수료
c세종대학교 건설환경공학과 교수
* Corresponding Author
30 April 2020. pp. 237-247
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Abstract

The purpose of this study is to analyze whether design rainfall and hyetograph, which are the main elements of design rainfall, can properly reflect the those of observed rainfalls through inundated rainfall events. The target areas were selected at seven large cities with high damages regarding to the flooding. Comparative analysis between probability and observed rainfall shows that 57% of the cases, in which rainfall amount through the IDF curve is estimated lower than the observed rainfall, do not properly reflect the observed rainfalls. In particular, this trend is exacerbated by the cases in low return period and the rain type of typhoon or frontal rain. The comparative results of rainfall intensity formula showed that the Talbot and Japanese formula were stable in the short- and long-term return periods, respectively. The comparison of hyetograph results also showed that the Mononobe method properly reflects the maximum rainfall intensity and the Huff method properly reflects the shape of rainfall pattern.

Keywords
Design rainfall
Rainfall intensity formula
Time distribution method
Urban inundation

본 연구의 목적은 실제 침수 강우자료를 활용하여 설계강우 주요 요소인 강우량 및 우량주상도가 실측 침수사상을 적절히 반영하는지 분석하는 것이다. 대상지역은 홍수발생 시 피해액이 높은 대도시 7곳을 선정하였다. 확률 강우량과 실측 강우량 비교분석 결과 IDF 곡선을 통한 강우량은 실측 강우사상의 총 강우량보다 낮게 산정되는 경우가 57%로 실측 강우의 강우량을 적절히 반영하고 있지 못한다고 판단되었다. 이러한 경향은 재현빈도가 저 빈도이며 호우 유형이 태풍 또는 전선성 호우일 경우 심해지는 것으로 나타났다. 강우강도 식별 강우량 비교결과 단기간에서는 Talbot 식, 장기간에는 Japanese 식이 안정적인 것으로 나타났다. 우량주상도 비교 결과 최대강우강도는 Mononobe 방법이 형태는 Huff 방법이 가장 적절히 반영하는 것으로 나타났다.

키워드
도시침수
설계강우
시간분포 방법
강우강도 식
References
1
Choi, S., Joo, K., Shin, H., and Heo, J.H. (2014). "Improvement of Huff's method considering severe rainstorm events." Journal of Korea Water Resources Association, Vol. 47, No. 11, pp. 985-996.
10.3741/JKWRA.2014.47.11.985
2
Hong, C.S., Wone, S.Y., Ahn, J.H., and Ahn, W.S. (2001). "Reliability analysis for the estimation of frequency-based rainfall." Journal of the Korean Society of Hazard Mitigation, Vol. 1, No. 3, pp. 111-122.
3
Jang, S.H., Yoon, J.Y., and Yoon, Y.N. (2006). "A study on the improvement of Huff's method in Korea: I. Review of applicability of Huff's method in Korea." Journal of Korea Water Resources Association, Vol. 39, No. 9, pp. 767-777.
10.3741/JKWRA.2006.39.9.767
4
Jo, D.J., and Jeon, B.H. (2012). "Analysis on the characteristics of exceeding probability rainfall events." Journal of the Korean Society of Hazard Mitigation, Vol. 12, No. 2, pp. 309-313.
10.9798/KOSHAM.2012.12.2.309
5
Jung, T.H., Kim, H.B, Kim, H.S., and Heo, J.H. (2019). "Selection of climate indices for nonstationary frequency analysis and estimation of rainfall quantile." Journal of the Korean Society of Civil Engineers, Vol. 39, No. 1, pp. 165-174.
6
Jung, S.I., Yoo, C.S., and Yoon, Y.N. (2007). "On the stationarity of rainfall quantiles: 1. Application and evaluation of conventional methodologies." Journal of the Korean Society of Hazard Mitigation, Vol. 7, No. 5, pp. 79-88.
7
Mugita, A., Yokota, T., Matsuura, T., and Nakamura, Y. (2017). "Analysis of the design rainfall for stormwater management of sewerage." Proceeding of14th IWA/IAHR International Conference on Urban Drainage, Prague, Czech Republic, pp. 1963.
8
Ministry of Land, Transport and Maritime Affairs (MLTM) (2011). Improvement and complementary research for probable rainfall.
9
Ministry of Public Administration and Security (MOPAS) (1998~2018). Disaster Annual Report.
10
Oh, T.S., Kim, E.C., Moon, Y.I., and Ahn, J.H. (2009). "Characteristics analyses of timely rainfall events above probability precipitation on each frequency." Journal of the Korean Society of Civil Engineers, Vol. 29, No. b6, pp. 513-526.
11
Park, C.Y., Moon, J.Y., Cha, E.J., Yun, W.T., and Choi, Y.E. (2008). "Recent changes in summer precipitation characteristics over South Korea." Journal of the Korean Geographical Society, Vol. 43, No. 3, pp. 324-336.
12
Park, J.K., Jung, W.S., and Choi, H.J. (2008). "An analysis of the Korean peninsula damages vulnerabilities for a natural disaster mitigation : Focus on public facilities damages." Journal of the Environmental Sciences, Vol. 17, No. 4, pp. 413-422.
10.5322/JES.2008.17.4.413
13
Park, J.P., Kang, T.U., and Lee, S.H. (2019). "A temporal distribution method of probable rainfall for planning a storm sewer Network in an urban area." Journal of the Korean Society of Hazard Mitigation, Vol. 19, No. 1, pp. 85-94.
10.9798/KOSHAM.2019.19.1.85
14
Sim, J.H., and Kim, Y.B. (2006). "The status and countermeasures of the national inveterate flooded district." Journal of National Institute for Disaster Prevention, Vol. 8, No. 1, pp. 79-94.
Information
  • Publisher :KOREA WATER RESOURECES ASSOCIATION
  • Publisher(Ko) :한국수자원학회
  • Journal Title :Journal of Korea Water Resources Association
  • Journal Title(Ko) :한국수자원학회 논문집
  • Volume : 53
  • No :4
  • Pages :237-247
  • Received Date : 2020-01-29
  • Revised Date : 2020-03-11
  • Accepted Date : 2020-03-11
  • DOI :https://doi.org/10.3741/JKWRA.2020.53.4.237
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