ANALYSYS NALYSYS OF THE PERFORMANCE OF INTAKE AND THE PERFORMANCE OF INTAKE AND THE PERFORMANCE OF INTAKE AND THE PERFORMANCE OF INTAKE AND THE PERFORMANCE OF INTAKE AND THE PERFORMANCE OF INTAKE AND THE PERFORMANCE OF INTAKE AND THE PERFORMANCE OF INTAKE AND THE PERFORMANCE OF INTAKE AND THE PERFORMANCE OF INTAKE AND THE PERFORMANCE OF INTAKE AND THE

In this study, turnout and check gates use were considered in both viewpoints, hydraulically and operation and maintenance conditions. Hydraulic assessment includes discharge and head loss. In this research, function of 42 Neyrpic – turnout gates and 10 amil automated check gates were evaluated. It is clear that impoundment of canals were confronted many difficulties by reason of turnout and check gates touches by operators, lack of proper management for amil adjustment and sediments empty in canals, so that, some turnout gates have discharge more than nominal and computational discharge, that cause to water shortage in final gates. It is observed that some turnout gates delivery water to downstream canals less than nominal and computational discharge by reason of gates submergence and retouching. The results showed that better management for Qazvin irrigation network. Also the results indicated that Neyrpic–modules gates will have satisfied accuracy of water delivery if check structures is controlled, although it is necessary to create proper instruction for control of home-made turnout gates. Finally, radial gates, slide gates and or fixed weirs are used for water level adjustment is recommended if irrigation network operation is not good

Keywords:

irrigation , Neyrpic , amil , sediment , checks gates