이상강우에 대비한 성주댐의 홍수조절 능력 분석

Evaluation of Flood Control Capacity for Seongju Dam against Extreme Floods

  • 권순국 (서울대학교 농업생명과학대학) ;
  • 한건연 (경북대학교 농과대학) ;
  • 서승덕 (경북대학교 농업생명과학대학) ;
  • 최혁준 (경북대학교 농과대학)
  • 발행 : 2003.11.01

초록

As a fundamental research to establish a safety operation plan for irrigation dams, this study presents hydrologic analysis conducted in Sungju Dam watershed based on various rainfall data. Especially those reservoirs without flood control feature are widely exposed to the risk of flooding, a safe and optimized operation program need to be improved against arbitrary flooding. In this study, reservoir routing program was developed and simulated for reservoir runoff estimation using WMS hydrology model. The model simulated the variations of reservoir elevation under the condition of open or closed emergency gate. In case of closed emergency gate, water surface elevation was given as 193.15 m, and this value exceeds the dam crest height by 1.65 m. When the emergency gate is open, the increment of water surface elevation is given as 192.01 m, and this value exceeds dam crest height by 0.57 m. As an alternative plan, dam height increase can be considered for flood control under the PMP (Probable Maximum Precipitation) condition. Since the dam size is relatively small compare to the watershed area, sound protection can be expected from the latter option rather than emergency gate installation.

키워드

참고문헌

  1. WMS(Watershed Modeling System) User's Manual ch. 21-8 Boss International
  2. Open Channel Hydraulics Chow,V.T.
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  12. Basic Plan for the Improvement of Daega River ch.10-7 Office of Gyeongsangbuk-do
  13. Water Power Generation Adequacy Investigation for Sungju Dam Sungju Farmland Improvement Association
  14. Hydrologic Modeling System HEC-HMS ch.10-11 US Army Corps of Engineers
  15. Design of Small Dams US Bureau of Reclamation