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하수관거 통수능 해석을 위한 Huff 모형과 ABM 법의 적용성 분석 KCI 등재

Applicability of Huff Model & ABM Method for Discharge Capacity of Sewer Pipe

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상하수도학회지 (Journal of the Korean Society of Water and Wastewater)
대한상하수도학회 (Korean Society Of Water And Wastewater)
초록

The sewer capacity design have been based on the Huff model or the rational equation in South Korea and often failed to determine optimal capacity, resulting in frequent urban flooding or over-sizing. A time distribution of rainfall (i.e., Huff or ABM method) could be used instead of a rainfall hyetograph obtained from statistical analysis of previous rainfalls. In this study, the Huff method and the ABM method, which predict the time distribution of rain intensity, which are widely used to calculate sewage pipe drainage capacity using the SWMM, were compared with the standard rainfall intensity hyetograph of Seoul. If the rainfall duration was 30 minutes to 180 minutes, the rainfall intensity value calculated by the Huff model tended to be less than the rainfall intensity value of the standard rainfall intensity in the initial 5-10 minutes. As a result, more than 10% to 30% of under-design would be made. In addition, the rainfall intensity value calculated by the Huff model from the section excluding the initial 5-10 minutes of rainfall to the rainfall duration was calculated larger than the value using the standard rainfall intensity equation, which would result in an over-design of 10% to 30%. In the case of a relatively long rainfall duration of 360 minutes (6 hours) to 1,440 minutes (24 hours), it showed an lower rainfall intensity of 60 to 90% in the early stages of rainfall, but the problem of under-design had been solved as the rainfall duration time had elapsed. On the other hand, in the alternating block method (ABM) method, it was found that the rainfall intensity at the entire period at each assumed rainfall duration accurately matched the standard rainfall intensity hyetograph of Seoul.

목차
ABSTRACT
1. 서 론
2. 연구방법
    2.1 표준 강우강도
    2.2 Huff Model
    2.3 ABM Model
3. 결과 및 토론
    3.1 강우지속시간의 변화에 따른 강우강도식 및 Huff분포 결과값의 비교
    3.2 강우지속시간의 변화에 따른 강우강도식 및 ABM결과 값의 비교
4. 결 론
References
저자
  • 현인환(단국대학교 토목환경공학과) | Inhwan Hyun (Civil and Environmental Engineering, Dankook University)
  • 전승희(단국대학교 토목환경공학과) | SeungHui Jeon (Civil and Environmental Engineering, Dankook University)
  • 김두일(단국대학교 토목환경공학과) | Dooil Kim (Civil and Environmental Engineering, Dankook University) Corresponding author