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양수장의 가동시간을 이용한 하천수 취수량 산정방안 연구

A study on the estimation of river water intake using the operating time of the pumping station

  • 백종석 (한국수자원조사기술원 하천조사실) ;
  • 김치영 (한국수자원조사기술원 하천조사실) ;
  • 차준호 (환경부 한강홍수통제소) ;
  • 송재현 (인하대학교 토목공학과)
  • Baek, Jongseok (Hydrological Survey Department, Korea Institute of Hydrological Survey) ;
  • Kim, Chiyoung (Hydrological Survey Department, Korea Institute of Hydrological Survey) ;
  • Cha, Jun-Ho (Han River Flood Control Office, Ministry of Environment) ;
  • Song, Jaehyun (Department of Civil Engineering, Inha University)
  • 투고 : 2019.11.14
  • 심사 : 2019.11.26
  • 발행 : 2020.02.29

초록

환경부 산하 물관리 기관들은 주요 하천을 대상으로 양질의 기초 자료를 생산 및 축적하고 있다. 하지만 농경지를 많이 포함한 유역에서는 농업용수의 취수와 배수 등 인공적인 물의 순환 과정이 정량적으로 조사되지 못하고 있어 하천 수량의 통합적인 관리가 부진한 실정이다. 본 연구에서는 농업용수를 목적으로 하천변에서 취수되는 유량의 조사를 위해 사용되는 간접 유량 계측방법 중 가동시간에 따른 전력량법(가동시간법)을 적용 및 개선하여 저비용으로 높은 신뢰도의 결과자료를 얻을 수 있는 방법에 대한 연구를 수행하였다. 가동시간법은 실시간 전력량 자료의 확보가 어려운 소규모 양수장에 적용하기 적합하다. 실측 유량과의 상관성 분석을 통해 자료의 신뢰성을 검증한 결과, 양수장의 흡입구가 연결된 하천의 수위를 반영하여 가동시간법으로 산정한 유량은 실측 유량과 상당히 일치하는 결과를 얻을 수 있는 것으로 확인되었다. 또한 본 연구에서는 최초 설비 설치시에 대한 투자 비용을 직접 유량 계측방법들과의 비교를 통해 저비용으로 양질의 유량자료를 생성하여 높은 효율성을 가지는 것으로 확인하였다. 가동시간법을 하천변에 위치한 크고 작은 양수장에 적용하여 유량 자료를 확보한다면, 보다 정량적이고 통합적인 하천수 관리의 시행에 있어 많은 영향을 미칠 수 있을 것이다.

Water management agencies under the Ministry of Environment produce and accumulate qualified basic data for major rivers. However, the integrated management of the river water has been weak since the artificial water circulation process, such as the intaking and drainage of agricultural water, has not been examined in the basin, which includes many agricultural land. In this study, a study was conducted on how the power usage method (operating time method) based on the running time can be applied and improved among indirect flow rate measurement methods used to investigate flow rates collected by the riverside for agricultural water purposes, and thus the resultant data of high reliability can be obtained at low cost. The operation time method is suitable for small-scale water pumping stations where it is difficult to secure real-time power supply data. The reliability of the data was verified through the correlation analysis with the actual flow rate, and it was found that the flow rate calculated by the operation time method reflecting the level of the stream to which the inlet of the pumping station is connected can be reasonably matched with the actual flow rate. In addition, it was confirmed that the investment cost at the time of initial installation of the facility was highly efficient by generating qualified flow data at low cost through comparison with direct flow rate measurement methods. If flow data is secured by applying the operation time method to large and small water farms located along the riverside, it is expected that more quantitative and integrated stream water management will be possible.

키워드

참고문헌

  1. Baek, J.S., Kim, C.Y., Cha, J.H., and Song, J.H. (2019). "A study on the applicability of power usage method for the analysis of river water intake." Journal of Korea Water Resources Association, Korea Water Resources Association, Vol. 52, No. 12, pp. 975-984. https://doi.org/10.3741/JKWRA.2019.52.12.975
  2. Kim, D.H. (2014). A study on determining river water usage through the analysing of real-time power data. Mater's thesis, University of Incheon, pp. 15-20.
  3. Ministry of Agriculture, Food and Rural Affairs (MAFRA) (2018). Pump design for Pumping station. KDS 67-30-20, Ministry of Agriculture, Food and Rural Affairs, Korea, pp. 20-23.
  4. Song, J.H., Park, M.H., Cha, J.H., and Kim, C.Y. (2019). "Applicability evaluation of velocity profile method by V-ADCP measuring real-time river water use." Journal of Korea Water Resources Association, Korea Water Resources Association, Vol. 52, No. 1, pp. 83-96.