Combined method for calculating the total erosion of channels stacked with easily eroded soils

In the article, based on the analysis of existing empirical dependencies and actual data of total erosion below the Takhiatash hydroelectric complex on the Amu Darya River, the structure and type of dependence of the transporting capacity of the stream on the main parameters of the channel and the morphometric dependence of the width of the stable channel on the average depth are selected. The proposed combined calculation method is based on the theoretical equations of deformation (Saint-Venant) and the equation of fluid motion (Bernoulli) and empirical dependencies for determining the average turbidity of the flow and channel width. Using these equations, the calculation of the total erosion below the Takhiatash hydroelectric complex on the Amu Darya River was carried out. Comparison of the calculation results with the actual data showed their satisfactory convergence.

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