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All Journal Sustainable Civil Building Management and Engineering Journal
Ibragimov Ilhom
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Civil Engineering, Building, Construction & Architecture Engineering

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Determining the Shezi Coefficient Under Regulated Water Flow Conditions Mirzaev, Mirzabek; Ibragimov Ilhom; Inomov Dilmurod
Sustainable Civil Building Management and Engineering Journal Vol. 3 No. 1 (2026): January
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/scbmej.v3i1.5231

Abstract

In the lower reaches of the Amu Darya River, the hydraulic regime has been significantly transformed under regulated flow conditions. The determination of the Chezy coefficient plays a crucial role in analyzing the kinematics and hydraulic resistance of the river flow. Based on field data obtained from Tuyamuyin, Kipchak, Niyetbaytas, Samanbay, and Kiziljar hydroposts, empirical relationships between the Chezy coefficient, discharge, and morphological parameters were developed. The analysis revealed that conventional formulas proposed by Manning, Forchheimer, Pavlovskiy, Agroskin, and Jeleznyakov showed considerable deviations under regulated conditions due to nonuniform depth distribution and increased roughness coefficients. The derived relationship for the lower Amu Darya provides improved accuracy in estimating the Chezy coefficient compared to classical methods. This approach enhances hydraulic computations and offers a practical basis for riverbed regulation and hydraulic design in managed flow conditions.
Co-Authors Inomov Dilmurod Mirzaev, Mirzabek