The aim of this study was to solve the problem of the management of water distribution in main irrigation canals using the methods which take into account the dynamic characteristics of the processes of water distribution in unsteady flow. The study was carried out at the example of Prigorodnyy main canal of Krasnodar. The method of active management of water distribution was developed. It is based on the methods for calculating transient hydraulic processes applying for solving the objectives of matching operation regimes of the units of pumping station with the operation regimes of baffle and distributing facilities at steady and unsteady regimes of water flow for the purpose of water distribution. We developed algorithms for calculating the control action values of shutter opens with discrete-pulse law of combined regulating water levels on the head race and tail-water of baffle facilities with flowing volumes. It was established that the method of active management of water distribution in main canal using local level regulators on tail-water and head race of baffle facilities at the beginning of the 8th and at the end of the 9th tail-water enables to use existing water capacities in the pools. This enables to transfer reserve water volumes along the canal in such a way that part of the canal length over 20 km of unsteady water flow is transformed into steady. It is proved that implementation of the developed method allows optimizing the management of water distribution and minimizing single and non-technological discharges.
Keywords: pumping station, main canal, management of water distribution, combined regulation of water levels, steady and unsteady flow of water, baffle facilities, water distribution facilities.
