Application of Stage-Fall-Discharge Rating Curves to a Reservoir Based on Acoustic Doppler Velocity Meter Measurement Data

Water

Hyunuk An¹  Seungsoo Lee²  Sungryul Oh³  Jisun Byun⁴  Yeonsu Kim⁴ 

[1] Department of Agricultural and Rural Engineering, Chungnam National University, Daejeon 34134, Korea;Division for Integrated Water Management, Korea Environmental Institute, Sejong 30147, Korea;Forecast and Control Division, Geum River Flood Control Office, Ministry of Environment, Gongju 32595, Korea;K-Water Research Institute, Daejeon 34045, Korea;

关键词: stage-fall-discharge rating curve;    ADVM;    backwater;    variable slope;   

DOI  :  10.3390/w13172443

来源: DOAJ

【 摘 要 】

The applicability of the stage-fall-discharge (SFD) method in combination with acoustic Doppler velocity meter (ADVM) data, upstream of a hydraulic structure, specifically, the Sejong-weir located in the Geum River, Korea, was examined. We developed three rating curves: a conventional simple rating curve with the data measured using an acoustic Doppler current profiler (ADCP) and floating objects, an SFD rating curve with the data measured using the ADCP and floating objects, and an SFD rating curve with the data measured using an ADVM. Because of the gate operation effect, every rating curve involved many uncertainties under 1000 m³/s (3.13 m²/s, specific discharge). In terms of the hydrograph reconstruction, compared with the conventional simple rating curve, the SFD developed using ADVM data exhibited a higher agreement with the measured data in terms of the pattern. Furthermore, the measured discharge over 1000 m³/s primarily ranged between 97.5% and 2.5% in the graph comparing the ratio of the median and observed discharge. Based on this experiment, it is confirmed that the SFD rating curve with data to represent the backwater effect, such as ADVM data, can reduce the uncertainties induced by the typical rating curve

【 授权许可】

Unknown