둑높이기 농업용저수지의 운영기준에 따른 환경용수 방류패턴 분석
An Analysis of Environmental Water Release Patterns Considering Operation Rules in Enlarged Agricultural Reservoirs
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초록
The importance of environmental water has been risen in terms of river ecosystem soundness with preventing stream flow depletionin rural area, while enlarging agricultural reservoir project is conducted under the 4 main river restoration project for supplying morewater to 4 main rivers. The aim of this study was to estimate the amount of environmental water release and analyze the releasepattern during non-irrigation season in enlarged agricultural reservoirs. The 4 reservoirs (Dansan, Samga, Geumbong, Changpyeong)located on the upper region of Nakdong river were simulated applying the operation rule which was determined by release criteriacurves. The simulated results indicated that the more environmental water could be released than the spillway release and continuousrelease was achieved with smaller range of fluctuation. In case of Changpyeong reservoir, average 506.0 thousand m3 environmentalwater could be released on Feb., and it was about twice as much as the spillway release before the enlargement, and also, the 18thousand m3/day environmental water could be supplied to a stream consistently after enlargement. From the results, it was expected thatthe additional environmental water release will improve stream water flow during dry season in terms of quantity and quality of water.
Abstract
The importance of environmental water has been risen in terms of river ecosystem soundness with preventing stream flow depletionin rural area, while enlarging agricultural reservoir project is conducted under the 4 main river restoration project for supplying morewater to 4 main rivers. The aim of this study was to estimate the amount of environmental water release and analyze the releasepattern during non-irrigation season in enlarged agricultural reservoirs. The 4 reservoirs (Dansan, Samga, Geumbong, Changpyeong)located on the upper region of Nakdong river were simulated applying the operation rule which was determined by release criteriacurves. The simulated results indicated that the more environmental water could be released than the spillway release and continuousrelease was achieved with smaller range of fluctuation. In case of Changpyeong reservoir, average 506.0 thousand m3 environmentalwater could be released on Feb., and it was about twice as much as the spillway release before the enlargement, and also, the 18thousand m3/day environmental water could be supplied to a stream consistently after enlargement. From the results, it was expected thatthe additional environmental water release will improve stream water flow during dry season in terms of quantity and quality of water.
참고문헌 (10)
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