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저수량 오차에 의한 장찬저수지의 유역외 유입량 추정

Estimation of Inflows to Jangchan Reservoir from Outside Watershed by Minimizing Reservoir Water Storage Errors

  • 노재경 (충남대학교 지역환경토목학과)
  • 투고 : 2010.08.11
  • 심사 : 2010.09.01
  • 발행 : 2010.09.30

초록

Jangchan reservoir is located in Okcheon county, Chungbuk province, of which watershed area is $29.4\;km^2$ from outside, and $5.1\;km^2$ from inside watershed, effective storage capacity is $392{\times}10^4\;m^3$, paddy area to be irrigated is 474 ha. To determine inflows from Keumcheon weir located in outside watershed on an optimum level, a repeated procedure which is composed of simulation of inflows to Keumcheon weir, setting of range of water taking at Keumcheon weir, simulation of inflows to Jangchan reservoir, estimation of paddy water from Jangchan reservoir, and simulation of water storages in Jangchan reservoir was selected. Parameters of DAWAST model for simulating inflows to Jangchan reservoir were determined to UMAX of 315 mm, LMAX of 21 mm, FC of 130 mm, CP of 0.018, and CE of 0.007 with absolute sum of errors in reservoir water storages minimized using unconstrained Simplex method because of no inflows data. Inflows to Keumcheon weir were simulated to $2,132{\times}10^4\;m^3$ on an annual average. Optimal range of water taking at Keumcheon weir to transfer to Jangchan reservoir were $0.81{\sim}50\;mm/km^2/d$, which were summed up to $1,397{\times}10^4\;m^3$ in 66% of total on an annual average. Inflows to Jangchan reservoir were simulated to $1,739{\times}10^4\;m^3$ on an annual average of which were 80 % from Keumcheon weir of outside watershed. Requirements to paddy water from Jangchan reservoir were estimated to $543{\times}10^4\;m^3$ on an annual average.

키워드

참고문헌

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피인용 문헌

  1. Securing Inflows to Reservoir with Low Ratio of Watershed to Paddy Field Areas by Operating Outside Diversion Weir vol.53, pp.1, 2011, https://doi.org/10.5389/KSAE.2011.53.1.017
  2. The Organization of Spatial Networks by the Velocity of Network Flows vol.53, pp.1, 2011, https://doi.org/10.5389/KSAE.2011.53.1.001