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The Inundation Simulation for Inland by River Hydraulic Structures

하천 수리구조물에 의한 제내지 침수모의

  • Choo, Tai-Ho (Dept. of Environmental and civil Engineering, Pusan National University) ;
  • Yoon, Hyeon-Cheol (Dept. of Environmental and civil Engineering, Pusan National University) ;
  • Noh, Hyun-Suk (Dept. of Environmental and civil Engineering, Pusan National University) ;
  • Yun, Gwan-Seon (Dept. of Environmental and civil Engineering, Pusan National University)
  • 추태호 (부산대학교 사회환경시스템공학부) ;
  • 윤현철 (부산대학교 사회환경시스템공학부) ;
  • 노현석 (부산대학교 사회환경시스템공학부) ;
  • 윤관선 (부산대학교 사회환경시스템공학부)
  • Received : 2013.12.13
  • Accepted : 2014.04.10
  • Published : 2014.04.30

Abstract

A local rain that is concentrated in specific area in a short time frequently occurs due to recent abnormal weather. To prevent potential flood disasters, therefore, it is necessary to be established to the flood control system. Checking the river design standard, however, hydrologic design frequency of water gate is only marked as over 20 years, so this fact shows that the standard is unclear. The inland inundation modeling considering the stage in a river and quantitative assessment are required to reduce flood damage. The simulation for internal inundation is very complex and is time-consuming due to considering hydraulic hydrology characteristics at the same time. Using the already established river master plan, consequently, this study proposed the simple and convenient method for assessment of the internal inundation simulation. Using the proposed method in the upper and middle regions of a river, influences for design frequency or water gate location were assessed by applying the nine probability precipitation with design frequency and by targeting the water gates which are installed in five inlands.

본 최근 이상기후 현상으로 인하여 단시간동안 특정지역에 집중되는 국지성호우가 빈번하게 발생하고 있어, 잠재적인 침수재해에 대비하기 위해 적합한 설계빈도를 적용할 필요가 있다. 그러나 하천설계기준을 살펴보면 배수문의 수문설계빈도는 20년 이상으로만 명시되어 그 설계빈도에 대한 기준이 상세하지 않음을 알 수 있다. 하지만 침수피해를 저감하기 위해 외수를 고려한 제내지 침수모의가 수행되어 정량적 평가를 요한다. 내수침수모의는 보통 수리 수문학적 특성을 동시에 고려하여 매우 복잡하고 시간이 오래 소요되었다. 따라서, 본 연구에서는 기 설립된 하천관련 보고서를 이용하여 간단하면서도 단시간에 평가할 수 있는 방법을 제안하였고, 하천의 중류 및 하류에 배수문이 설치된 5개소의 제내지를 대상으로 설계빈도에 따른 9가지 확률강우량을 적용하여 설계빈도 및 위치에 따른 영향을 평가하였다.

Keywords

References

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