Fish-spawning canal of the Kochetovsky hydroelectric complex on the Don River

Abstract

The purpose of the research is to develop a layout and design solution for a fish-spawning channel, arranged to bypass the Kochetovsky waterworks on the Don River. Materials and methods. The factual basis of the development was made up of materials of topographic and hydrological surveys, complex surveys of structures and hydrometric studies of discharge regimes of expenses by culverts, data on the functioning of the fish-passing gateway and information on the migratory behavior of fish in the lower reaches of the waterworks. Results and discussion. Based on the initial information on the waterworks, survey and research materials, two alternative variants of the layout and design solution of the fish-spawning channel with its location on the right bank, adjacent to the waterworks, section of the Don floodplain are proposed. According to the first option, the channel is traced mainly along the riverbed (channels) Barsovka, its dimensions are designed to pass a flow rate of – 90 m³ /s, with an average flow rate of the water threshold along its path – 0,95 m/s. According to the second variant, the channel is located within the water-protected zone of the Don River along its right bank, the channel path is designed to pass a flow rate of 50 m³ /s and is equipped with an additional power supply unit at the inlet head, designed for a flow rate of 40 m³ /s. The facilities are equipped with entrance and exit heads, recreation areas for fish and fishing regulators. Both variants of the channel arrangement ensure their functioning according to their purpose – to provide conditions for the passage and spawning of fish. Information is provided on the advantages and disadvantages of each of the technical solutions, the comparison of which allows you to choose one of the options for subsequent development and implementation. Conclusion. 1 Two alternative variants of the layout and design solutions of the Kochetovsky fish-spawning channel have been developed. 2 For further development, it is recommended to trace the channel along the right bank of the Don River with the inclusion of an additional power supply unit in its composition.