환경영향평가 (Journal of Environmental Impact Assessment)

한국환경영향평가학회 (Korean Society of Environmental Impact Assessment)
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국내 자연형 어도 설계 기준 마련을 위한 고찰 - 자연형 어도 표준 모형안의 문제점과 개선방안을 중심으로 -

Study on Design Standards for Nature-like Fishway in Korea

  • 황성원 (고려대학교 화공생명공학과) ;
  • 김진오 (경희대학교 환경조경디자인학과)
  • Hwang, Sung-Won (Department of Chemical and Biological Engineering, Korea University) ;
  • Kim, Jin-Oh (Department of Landscape Architecture, Kyung Hee University)
  • 투고 : 2017.03.10
  • 심사 : 2017.06.06
  • 발행 : 2017.06.30
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초록

현재 우리나라에 설치된 어도의 90% 이상이 콘크리트 인공 어도로 되어있으나, 최근 자연적인 재료를 이용하여 소하천의 형태로 설치하는 자연형 어도가 많이 설치되고 있다. 이에 따라 국내 정부산하 공기업과 대학에서는 자연형 어도에 대한 설계 기준에 등록할 목적으로 '자연형 어도 표준모형 형식(안)'을 제안하였다. 본 연구에서는 기존에 제안된 형식안을 검토해보고 보완, 개선되어야 할 사항을 제시해보았다. 연구 결과, 지금까지 국내에서 어도 설계와 관련하여 진행되었던 연구가 매우 부족해 적절한 기준을 마련하는데 한계가 있었던 것으로 판단된다. 특히 우회수로형 자연형 어도에서의 구조 유지 방안이나 내부 돌 설치 방법, 또는 자연 재료에 대한 연구가 부족한 것으로 판단되었는데, 이는 해외에서 진행되었던 연구사례에 비춰볼 때 국내에서도 국내 상황에 맞는 설계 연구가 보다 적극적으로 진행되어야 할 것으로 보인다. 또한 경사도와 폭에 대한 설계기준 역시 주로 이미 설치되어 있는 국내의 자연형 어도들을 근거로 제시되고 있는데, 이는 어종 특성은 물론 어도에 대한 수리학적, 생물학적 연구를 바탕으로 각 지역 조건에 맞는 설계기준이 새롭게 마련되어야 할 것으로 판단된다.

While over 90 percent of fishways are made up with concrete material, nature-like fishways are started to be established as a form of small stream using natural materials. Recently, the central government in collaboration with a university has proposed a 'Standard Model of Nature-like Fishway' with a purpose to provide as a national design standard of nature-like fishway. This study aims to criticize the proposed design model of nature-like fishway and to propose improvements by examining other international cases. As a result, we found problems and limitations of the proposed design model due to the lack of research and experience about making nature-like fishway in Korea. Especially, for designing bypass nature-like fishway we found the lack of studies about structure management strategies, establishment of rocks or pebbles inside the stream, and natural materials. In this sense, more studies about nature-like fishway design adaptable to our environment need to be conducted. In addition, since the proposed design standard for nature-like fishway has been created based on the limited examination of existing domestic cases, it is desirable to improve the design standard on the basis of hydrological and biological research so that they could be adapted effectively to regional and local contexts.

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