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http://dx.doi.org/10.12652/Ksce.2018.38.6.0831

An Evaluation of River Discharge Estimates in a Junction with Backwater effect using Interpolated Hydraulic Performance Graph  

Kim, Ji-Sung (Korea Institute of Civil Engineering and Building Technology)
Kim, Won (Korea Institute of Civil Engineering and Building Technology)
Publication Information
KSCE Journal of Civil and Environmental Engineering Research / v.38, no.6, 2018 , pp. 831-838 More about this Journal
Abstract
This paper presents a method to estimate the flow discharge in a backwater affected river junction. First, unsteady HEC-RAS model was simulated and calibrated using 2 recent real flood and then HPG (Hydraulic Performance Graph) was created by plotting the relationship between upstream and downstream stages and discharge in the reach and performing kriging interpolation. During a flood, the discharge through the reach can be estimated based on the stages at its ends and the developed HPG. These discharge data were in good agreement with the automatic discharge measurements such as ADVM. This study could provide an economical and practical method for estimating discharge in a junction with a high hysteresis of stage-discharge relationships.
Keywords
Backwater; Junction; Stage-discharge relationship; Automatic discharge measurement; HPG;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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