Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Analysis and Comparison of Flow Rate Measurements Using Various Discharge Measuring Instrument and ADCP

다양한 유량 측정기기와 ADCP를 이용한 유량 비교 분석

  • 지주연 (국립환경과학원 금강물환경연구소) ;
  • 박승용 (국립환경과학원 금강물환경연구소) ;
  • 이광우 (국립환경과학원 금강물환경연구소) ;
  • 박경민 (국립환경과학원 금강물환경연구소) ;
  • 황순홍 (국립환경과학원 금강물환경연구소) ;
  • 김동호 (국립환경과학원 금강물환경연구소) ;
  • 이영준 (국립환경과학원 금강물환경연구소)
  • Received : 2012.12.05
  • Accepted : 2013.02.20
  • Published : 2013.02.28
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Abstract

Discharge data examine the process of hydrologic cycle and used significantly in water resource planning and irrigation and flood control planning. It makes high quality discharge data, they carry out research on standard and method of discharge measurement, and equipment improvement. Now various flow meters are utilized to make discharge data in Korea. However, accuracy of equipment and exprerimental research data from measurement are not enough. ADCP(Acoustic Doppler Current Profiler) have been introduced and utilized for flow measurements since the end of 1980's. ADCP flow method is a formal method for flow measurement can easily applyd to relatively large rivers gradually recognized. This equipment can measure the non-contact three-dimensional velocity and water depth data very quickly and efficiently. Also, spatial and temporal resolution of the data is more accurate than any other flow measurement methods which measure flow rate by velocity - area measurement method. In this paper, the velocity is measured using various flow meter and verified the effectiveness by applying from the ADCP in Geum-river. Various flow meters which are med for discharge measurements are VALEPORT002, FLOW TRACKER, PRICE AA and ADCP. The average of five times flow measurement result by ADCP was $10.412m^3/s$, with a standard deviation of 0.68. The repeat test by ADCP and comparison between ADCP and other flow devices to verify the most import factor, flow measurement accuracy. In the result, repeat test of the ADCP showed similar values, flow values were similar to other velocity device results and the average error is 7.7%.

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References

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