한국수자원학회논문집 (Journal of Korea Water Resources Association)

  • 제49권12호
  • /
  • Pages.961-969
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  • 2016
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  • 2799-8746(pISSN)
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  • 2799-8754(eISSN)
한국수자원학회 (Korea Water Resources Association)
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경사형 및 계단형 보의 유량계수 산정을 위한 실험연구

Experimental study on the discharge coefficient of slope-type and step-type weirs

  • 강준구 (한국건설기술연구원 하천실험센터) ;
  • 김종태 (한국건설기술연구원 하천실험센터)
  • Kang, Joon Gua (River Experiment Center, Korea Institute of Civil Engineering and Building Technology) ;
  • Kim, Jong Tae (River Experiment Center, Korea Institute of Civil Engineering and Building Technology)
  • 투고 : 2016.08.30
  • 심사 : 2016.11.02
  • 발행 : 2016.12.31
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초록

최근 들어 보의 환경적인 측면을 고려한 저낙차형 구조물 설치가 요구되면서 고정보의 형태도 다양하게 제안되고 있다. 그러나 실무에 적용하기 위한 횡단구조물의 설계 가이드라인은 매우 한정적이다. 따라서 본 연구는 국내 중소하천에 설치된 고정보의 물리적 제원 변경에 의한 수리적 특성을 분석함으로써 환경적인 측면을 고려한 저낙차형 고정보의 유량계수 산정을 위한 기초자료를 제공하는데 목적이 있다. 이를 위해 경사형 및 계단형 보에 대해 crest 변화에 따른 기본적인 유량계수를 도출하였으며 수위-유량 관계 곡선을 개발하였다. 또한 유량과 crest 등과 같은 수리학적조건을 변화시켜 자유 흐름 조건 및 잠긴 흐름 조건의 흐름특성을 분석하였다.

Due to the recent requirement of installing low-head structures considering environmental aspects, various types of fixed weir have been suggested. However, the design guideline of transverse structures for practical application is very limited. The purpose of the present study is to analyze the hydraulic properties of the fixed weirs installed at the small and middle sized rivers of Korea depending on the physical specifications to provide fundamental data that may be reflected to the design of a low-head fixed weir considering the relevant environmental aspects. The basic discharge coefficient of slope-type and step-type weirs depending on change of crest was estimated, and a stage-discharge curve was developed. In addition, the flow properties under free flow and submerged flow conditions were analyzed by varying the hydraulic conditions such as discharge and crest.

키워드

참고문헌

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