Journal of Wetlands Research (한국습지학회지)

Korean Wetlands Society (한국습지학회)
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Effects of Operation of the Kyeongpo Retarding Basin on Flood Water Levelin Kyeongpo Lake

경포유수지 운영이 경포호의 홍수위에 미치는 영향

  • Park, Sang Doeg (Department of Civil Engineering, Gangnung-Wongju National University) ;
  • Lee, Seungkyu (Department of Civil Engineering, Gangnung-Wongju National University) ;
  • Shin, Seung Sook (Department of Civil Engineering, Gangnung-Wongju National University) ;
  • Yoon, Byung Man (Department of Civil and Environmental Engineering, Myongji University)
  • 박상덕 (강릉원주대학교 토목공학과) ;
  • 이승규 (강릉원주대학교 토목공학과) ;
  • 신승숙 (강릉원주대학교 토목공학과) ;
  • 윤병만 (명지대학교 토목환경공학과)
  • Received : 2016.07.25
  • Accepted : 2016.10.28
  • Published : 2016.11.30
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Abstract

Effects of the design flood share of the Kyeongpo retarding basin, which has a function for flood control of the Kyeongpo river assigned to the Kyeongpo prickly water lily wetland, on the Kyeongpo lake and the downstream of Kyeongpo river were analyzed on the bassis of the hydraulic experiments and the numerical simulations using RMA-2 model. Reproducing a complex water flow system of the area of Kyeongpo lake, the unsteady flow simulations were performed. The data obtained in hydraulic experiments were used to determine parameters of the numerical model which simulated the flows for various flood scenarios in the downstream area of Kyeongpo river. With increasing the design flood share rates in the retarding basin, the water level was increased in the lake and is decreased in the river. The characteristics of flood flow interaction between Kyeongpo river and Kyeongpo lake were understood. These results may be used to management the Kyeongpo lake during flood season.

경포가시연습지를 활용한 경포 유수지의 경포천 계획 홍수량 분담이 경포호에 미치는 영향을 수리모형실험과 RMA-2 모형을 이용하여 분석하였다. 경포호의 복잡한 흐름 구조를 재현하기 위해 부정류를 모의하였다. 수리모형실험에서 확보한 자료를 이용하여 수치모형의 매개변수를 추정하고, 다양한 홍수 시나리오를 고려하여 경포천 하류부 및 경포호의 흐름을 모의하였다. 경포 유수지의 홍수 분담량이 증가하면 경포호의 최대 수위는 증가하고 경포천 하류부의 수위는 감소하였다. 경포호와 경포천의 홍수 흐름이 서로 작용하는 특성을 파악할 수 있었다. 이 결과는 경포호의 홍수 시 유지관리에 활용될 수 있을 것이다.

Keywords

References

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