ЧИСЛЕННОЕ МОДЕЛИРОВАНИЕ РУСЛОВЫХ ПРОЦЕССОВ В ЗОНЕ БЕСПЛОТИННОГО ВОДОЗАБОРА КАНАЛА ТАШСАКА НА РЕКЕ АМУДАРЬЯ

This article studies the natural regime of sediment movement in the area of the water intake from the Amu Darya River into the Tashsaka canal. For this purpose, a calibrated two-dimensional hydrodynamic model was developed, on which calculations were performed at water discharges of 100, 200, 300 and 500 m³/s, obtained from actual observations at the Tuyamuyun gauging station in 2021. Topographic maps, SRTM-3 elevation data and multi-year satellite images were used in constructing the model. The model was calibrated using 2020–2021 data with an accuracy of 5–15 cm, and verification (for the entire year 2021) showed a result of R²=0.83. It was found that the water-level stabilisation time varies from 8 to 14 days depending on the discharge. The developed model and the resulting baseline data can subsequently be used to assess the real effectiveness of any engineering solution.

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