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2018 Vol.5, Issue 4 Preview Page

Original Article

An Experimental Study on the Sediment Transport Characteristics Through Vertical Lift Gate

연직수문의 퇴적토 배출특성에 관한 실험적 연구

Ji Haeng Lee1
,
Heung Sik Choi2*
이 지행1
,
최 흥식2*
1Department of Civil Engineering, Sangji University, Wonju 26338, Korea
2Department of Civil Engineering, Sangji University, Wonju 26338, Korea
1상지대학교 일반대학원 박사과정
2상지대학교 건설시스템공학과 교수
* Corresponding Author
31 December 2018. pp. 276-284
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Abstract

In order to analyze sediment transport characteristics of knickpoint migration, sediment transport length, and sediment transport weight through the under-flow type vertical lift gate, the hydraulic model experiment and dimensional analysis were performed. The correlations between Froude number and sediment transport characteristics were schematized. The multiple regression formulae for sediment transport characteristics with non-dimensional parameters were suggested. The determination coefficients of multiple regression equations appeared high as 0.618 for knickpoint migration, 0.632 for sediment transport length, and 0.866 for sediment transport weight. In order to evaluate the applicability of the developed hydraulic characteristic equations, 95% prediction interval analysis was conducted on the measured and the calculated by multiple regression equations, and it was determined that NSE (Nash-Sutcliffe Efficiency), RMSE (root mean square), and MAPE (mean absolute percentage error) are appropriate, for the accuracy analysis related to the prediction on sediment transport characteristics of kickpoint migration, sediment transport length and weight.

Keywords
Knickpoint migration
Sediment transport characteristics
Sediment transport length
Sediment transport weight
Vertical lift gate

하단배출 형태의 연직수문을 대상으로 퇴적토 배출특성에 따른 두부침식 거리비, 퇴적토 이동거리와 이동량을 분석하기 위해 수리 모형실험과 차원해석을 수행하였다. Froude 수와 배출특성의 상관관계를 도식화하고, 퇴적토 배출특성을 지배하는 무차원 매개변수에 의한 다중회귀식을 제안하였다. 두부침식거리, 퇴적토 이동거리와 이동량에 대한 각 다중회귀 분석식의 결정계수는 각각 0.618, 0.632, 0.866으로 높게 나타났다. 개발한 퇴적토 배출특성식의 사용성을 평가하기 위해 실제 측정값과 회귀분석식에 의해 계산된 값의 95%의 예측 신뢰구간 분석을 수행하였고, 두부침식거리, 퇴적토 이동거리와 이동량에 대한 예측의 정확도 분석차원의 NSE (Nash-Sutcliffe Efficiency), RMSE (root mean square)와 MAPE (mean absolute percentage error)는 적절한 것으로 판단되었다.

키워드
두부침식거리
퇴적토 배출특성
퇴적토 이동거리
퇴적토 이동량
연직수문
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Information
  • Publisher :Korean Society of Ecology and Infrastructure Engineering
  • Publisher(Ko) :응용생태공학회
  • Journal Title :Ecology and Resilient Infrastructure
  • Journal Title(Ko) :응용생태공학회 논문집
  • Volume : 5
  • No :4
  • Pages :276-284
  • Received Date : 2018-12-10
  • Revised Date : 2018-12-24
  • Accepted Date : 2018-12-24
  • DOI :https://doi.org/10.17820/eri.2018.5.4.276
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