REAL TIME WATER DELIVERY MANAGEMENT AND PLANNING IN IRRIGATION AND DRAINAGE NETWORKS

摘要

This paper focuses on delivery and demand management in irrigation and drainage networks asrnthe largest water resource consumer. A model is developed for water demand management inrnirrigation networks. The model is capable of predicting actual water requirements in every fieldrnblocks and produces water delivery schedule for all network elements. In this model, planningrnwater delivery schedule in irrigation network is accomplished by considering three importantrnfactors including crops irrigation calendars, water distribution method, and canals hydraulicrnconditions and performance. The model incorporates CANAL ROTATION & SEMI DEMANDrnmethod for water distribution in canals. Due to sizable quantity and spatial and temporalrnvariations of required data and the necessity for updating the results in real time operation, all thernrequired data are classified, stored and managed in a database system. The developed model isrnalso capable of planning water delivery in canals upon sound simplifications of irrigationrnplanning regarding proper water distribution criteria. In dry periods, the developed modelrncompares actual required water with available water resources and modifies quantity and/orrndelivery time considering amount of available water. The model is incorporated in planningrnwater delivery management system for RMC lot (4500 ha) in Irrigation and drainage Schemern(Aji-Chai) located in Tabriz plain, East Azerbaijan, Northwest of Iran.