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http://dx.doi.org/10.21729/ksds.2020.13.4.65

A Comparative Study on Direct Instrument Methods in Open Channel for Measuring River Water Usage  

Baek, Jongseok (Hydrological Survey Department, Korea Institute of Hydrological Survey)
Kim, Chiyoung (Hydrological Survey Department, Korea Institute of Hydrological Survey)
Lee, Kisung (Department of Civil Engineering, Inha University)
Kang, Hyunwoong (Hydrological Survey Department, Korea Institute of Hydrological Survey)
Song, Jaehyun (Department of Civil Engineering, Inha University)
Publication Information
Journal of Korean Society of Disaster and Security / v.13, no.4, 2020 , pp. 65-74 More about this Journal
Abstract
Continuous and accurate instrument of river water usage is needed for sustainable river water management. Although the instrument methods applicable to each point of use of river water are different, more precise direct instrument methods are required at the point of major open channel. Users of river water should select appropriate direct instrument methods to measure usage, but there is a lack of standards and verification research. In this study, the H-Q rating curve method, ultrasonic method, and microwave method were applied directly to the test basin in the upper basin of Mangyeong river, and the accuracy of measurement data was evaluated by comparing absolute error between discharge data calculated by instrument method. When comparing the calculated discharge of point units, the ultrasonic method showed the best results of the actual measurement. Through continuous instrument, the sum of the daily and monthly units was compared, and the ultrasonic and microwave methods were shown to be highly accurate. Based on the results of this study, it is hoped that the appropriate direct measurement method can be selected according to the importance of the river water use facility, considering that the ultrasonic method and the microwave method are relatively costly compared to the water level-flow relationship method.
Keywords
Open channel; Discharge; Direct instrument method; River water usage;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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