ASSESMENT OF SEDIMENT TRANSPORT RATE AND NON-SILTING VELOCITY IN IRRIGATION CANAL
Journal Title: ISB-INMA TEH AGRICULTURAL AND MECHANICAL ENGINEERING - Year 2018, Vol 0, Issue 8
Abstract
Siltation is a significant factor, affecting the efficient operation and maintenance of the irrigation canals which influence the hydraulic behavior of the canals and economic benefits of irrigation. In last 25 years a tendency of silting up at the irrigation canals in Bulgaria is observed due to the following reasons: decreased area under irrigation, fluctuation in supply, nonsafety situation. The large number of bed load and permissible velocity formulas available and the significant differences between obtained results enforce selection of appropriate sediment transport formulas in each particular case. Discharge and velocity approach are used in this study for estimation of sediment transport and deposition rates at Babreka Canal, Malka Vitska Irrigation Project in Bulgaria. In this study seven equations for prediction total bed load transport rates and five equations for minimum permissible velocity are compared. Two formulas for total bed load and two formulas for minimum permissible velocity are selected as appropriate for study canal.
Authors and Affiliations
E. Grancharova, G. Patamanska
Keywords
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