[논문]SWAT 모형을 이용한 보령댐 도수로 운영 방안 및 정책 연구

박범수; 윤효직; 홍용석; 김성표

doi:10.15681/kswe.2020.36.6.546

SWAT 모형을 이용한 보령댐 도수로 운영 방안 및 정책 연구
A Study on the Optimal Operation and Policy of the Boryeong Dam Diverion Pipe Line Using the SWAT Model 원문보기

한국물환경학회지 = Journal of Korean Society on Water Environment, v.36 no.6, 2020년, pp.546 - 558

박범수 (한국수자원공사 감사실) , 윤효직 (고려대학교 환경시스템공학과) , 홍용석 (고려대학교 환경시스템공학과) , 김성표 (고려대학교 환경시스템공학과)

Abstract ▼ AI-Helper

While industrialization has provided in abundance, the pollution it creates has caused untold damage to the environment, increasing the frequency and severity of natural disasters through changes in global climate patterns. The World Risk Forum's (WEF) World Risk Report presented the results of a survey of experts from around the world detailing the most influential risk factors over the next decade. Notably, the failure to respond to climate change ranked first and the global water crisis third. The extreme drought in the western Chungnam province was unexpected in 2016. At the time, the water level of Boryeong Dam was drastically decreased due to receiving less than half the average recorded rainfall in the region that year. The Boryeong Dam diversion pipeline has the capacity to solve the water shortage problem between these two regions by providing water from Geumgang to the western part of Chungnam, including Boryeong City. Current weather trends suggest drought is likely to continue in western Chungnam, which uses the Boryeong Dam as an intake source. This makes it necessary to operate Boryeong Dam diversion pipeline in an efficient and effective manner. SWAT is a watershed scale model developed to predict the impact of land management practices on water. The SWAT model was used in this study to evaluate the adequacy of the Boryeong Dam diversion pipeline operational plan by comparing it to present Boryeong Dam diversion pipeline operation. By investigating the number of days required to reach each reservoir stage, we determined that the number of days required to reach the boundary stage was less than that of the current operation. This determination accounts for the caveats that the Boryeong Dam waterway was not operated and only one pump will be operated from October to May of next year. As our results suggest, the most stable operation scenario is to operate two pumps at all times. This can be accomplished by operating two pumps from the caution stage to increase the number of pumps whenever the stage is raised. In addition to the stable operation of the Boryeong Dam pipeline, policy considerations are required with regard to imposing a water use charge on users of the Boryeong Dam region.

주제어

표/그림 (25)

그림 Fig. 1. Location of Boryeong Dam basin and diversion pipeline.
그림 Fig. 2. DEM based small watershed classification and inflow point of lake and waterway.
그림 Fig. 3. Status of soil type in Boryeong Dam basin.
그림 Fig. 4. Weather data for the last 10 years in the Boryeong Dam basin (2009-2018).
표 Table 1. Standard for adjustment of water supply by stage
표 Table 2. Selection of the operation plan for Boryeong Dam
그림 Fig. 5. Calibration of Boryeong Dam inflow.
표 Table 3. Standard for adjustment of water supply by stage
그림 Fig. 6. Calibration results of Boryeong Dam inflow.
그림 Fig. 8. Calibration results of Boryeong Dam water storage.
그림 Fig. 7. Validation results of Boryeong Dam inflow.
그림 Fig. 9. Validation results of Boryeong Dam water storage.
그림 Fig. 10. Simulation results of water storage in accordance with scenario 1.
그림 Fig. 11a. Operation with one pump (Always, scenario 2).
그림 Fig. 11b. Operation with two pumps (Always, scenario 2).
그림 Fig. 12a. Operation with one pump (October∼May, scenario 3).
그림 Fig. 13a. Operation with one pump (October∼March, scenario 4).
그림 Fig. 14a. Pattern of one pump operation.
그림 Fig. 14b. Pattern of 2 pump operation.
그림 Fig. 12b. Operation with two pumps (October∼May, scenario 3).
그림 Fig. 13b. Operation with two pumps (October∼March, scenario 4).
그림 Fig. 15a. Operation of 1 to 3 pumps (step by step, scenario 5).
그림 Fig. 15b. Operation of 2 to 4 pumps (step by step, scenario 5).
표 Table 4. Selection of the operation plan for the Boryeong Dam diversion pipeline
표 Table 5. Selection of the operation plan for the Boryeong Dam diversion pipeline with water use charge

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