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Simulation of Change in Physical Habitat of Fish Using the Mobile Bed Model in a Downstream River of Dam

댐 하류 하천에서 하상변동 모델을 이용한 어류 물리서식처 변화 모의

Seung Ki Kim1
,
Sung-Uk Choi1*
김 승기1
,
최 성욱1*
1Department of Civil and Environmental Engineering, Yonsei University
1연세대학교 토목환경공학과
*교신저자. *Corresponding Author. 
31 December 2015. pp. 317-323
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Abstract

This study investigated the impact of the morphological change on a physical fish habitat in the downstream reach of a dam using long-term mobile bed simulation. The quasi-steady model was used for hydraulic simulation and the habitat suitability index model was applied for physical habitat simulation. For simulating long-term morphological change of the stream bed, The Exner equation was used. Sorting of bed material was also considered. The results of simulation showed that erosion and armoring process occurred in a reach downstream of the dam and change of physical habitat for Zacco platypus followed. These results indicate that channel morphology and substrate conditions effected the physical habitat for considering long-term investigation.

Keywords
Dam
Geomorphological change
Hydropeaking
Physical habitat simulation
Quasi-steady model

본 연구는 장기하상변동 모의를 이용하여 댐 하류 하천에서의 하상변동이 어류 물리서식처에 미치는 영향에 대하여 연구하였다. 이를 위하여 흐름모형은 준정류 모형을 이용하였으며, 서식처 모형은 서식처 적합도 지수 (HSI) 모형을 이용하였다. 장기하상변동 모의를 위하여 Exner 방정식을 이용하였으며 하상재료 입도분포의 변화를 고려하였다. 내성천 영주댐 하류에서 모의결과 침식과 장갑화가 진행되었으며 이에 따라 피라미의 물리서식처가 변하게 되었다. 지형과 하상재료의 변화가 어류 물리서식처에 영향을 끼치는 것을 확인할 수 있다.

키워드
댐
지형 변화
발전 방류
물리서식처 모의
준정류 모형
References
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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 : 2
  • No :4
  • Pages :317-323
  • Received Date : 2015-12-02
  • Revised Date : 2015-12-06
  • Accepted Date : 2015-12-20
  • DOI :https://doi.org/10.17820/eri.2015.2.4.317
Journal Informaiton Ecology and Resilient Infrastructure Ecology and Resilient Infrastructure
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