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둑높이기 농업용저수지의 환경용수 방류기준 설정

Optimizing Rules for Releasing Environmental Water in Enlarged Agricultural Reservoirs

  • 유승환 (서울대학교 농업생명과학대학) ;
  • 이상현 (서울대학교 생태조경.지역시스템공학부 대학원) ;
  • 최진용 (서울대학교 조경.지역시스템공학부, 농업생명과학연구원) ;
  • 박태선 (한국농어촌공사 4대강사업단 4대강총괄팀)
  • 투고 : 2012.06.22
  • 심사 : 2012.08.06
  • 발행 : 2012.09.30

초록

The main purposes of the agricultural reservoir enlargement (ARE) project are to secure water supply reliability (WSR) for agriculture and to release environmental water during dry seasons. In this study, an operational rule that will simultaneously satisfy both the above issues was developed. Initial amount of water storage at the beginning of non-irrigation season (1st October) was divided into 3 stages, and the target level of water storage at the beginning of irrigation seasons (1st April) was set up. Required operational curves and release amounts were estimated based on the stages and target water levels. To evaluate the applicability of this rule, the amount of water released for environmental purposes and WSRs were analyzed for three reservoirs (Unam, Jangchi and Topjeong). The ratio between annual amount of release and additional amount of water storage were 1.6, 1.85, and 4.1 for the Unam, Jangchi, Tapjeong reservoirs, respectively. Also, the WSRs of all reservoirs were found to become higher than when the design standard was applied. Therefore, it is considered that the proposed rule is more suitable for the enlarged agricultural reservoirs operation as it satisfies the WSRs while securing the environmental water release.

키워드

참고문헌

  1. Kim, H. D., K. Y. Lee, I. K. Jung, K. W. Jung and J. W. Kwon, 2011. The classification of dam heightening reservoir using factor and cluster analysis, KCID (Korean National Committee on Irrigation and Drainage) Journal 18(2): 66-75 (in Korean).
  2. Kim, H. Y., 1988. Simulating daily inflow and release rates for irrigation reservoir. PhD thesis, Seoul National University, Seoul, Republic of Korea (in Korean).
  3. Kim, H. Y. and S. W. Park, 1988. Simulating daily inflow and release rates for irrigation reservoir (II) -Modeling reservoir release rates-, Journal of the Korean Society of Agricultural Engineers 30(2): 95-104 (in Korean).
  4. Kim, S. M., S. J. Kim, Y. W. Kim, T. Y. Kim, S. M. Kim, K. W. Park and M. W. Jang, 2011. Potential release of environmental flow through irrigation reservoir, Journal of the Korean Society of Agricultural Engineers 53(6): 101-109 (in Korean). https://doi.org/10.5389/KSAE.2011.53.6.101
  5. Lee, J. N. and J. K. Noh, 2010. Evaluation of supplying instream flow by operation rule curve for heightening irrigation reservoir, Journal of Agricultural Science 37(3): 481-490 (in Korean).
  6. Minister of Land, Transport and Maritime Affairs(MLTM), 2009. Master plan report for the 4 major rivers restoration project (in Korean).
  7. Noh, J. K. and J. N. Lee, 2010. Variation of water supply for instream flow from reservoirs with various magnifications of paddy irrigation area to watershed area, Journal of Agricultural Science 38(2): 331-341 (in Korean).

피인용 문헌

  1. Effects of Agricultural Reservoir Rehabilitation on their Flood Control Capacities vol.55, pp.6, 2013, https://doi.org/10.5389/KSAE.2013.55.6.057
  2. An Analysis of Environmental Water Release Patterns Considering Operation Rules in Enlarged Agricultural Reservoirs vol.55, pp.3, 2013, https://doi.org/10.5389/KSAE.2013.55.3.051
  3. Evaluating Future Stream Flow by Operation of Agricultural Reservoir Group considering the RCP 8.5 Climate Change Scenario vol.57, pp.5, 2015, https://doi.org/10.5389/KSAE.2015.57.5.113