Fish-spawning channel consisting of Kochetovsky waterworks facility on the Don river (variants of layout and design solutions)

Abstract

The relevance of the development of technical solutions for the Kochetovsky fish-spawning channel is predetermined by the ongoing degradation of populations and a decrease in commercial fish stocks in the Azov-Don fishery basin. One of the reasons for the current and deteriorating fishing conditions on the Lower Don is a decrease in the volume of natural reproduction of passing and semi-passing fish. The necessary volumes of natural reproduction of commercial herds can be provided by creating conditions for spawning migrations and spawning of fish in the Don River. This task can be solved to a certain extent by the creation of the Kochetovsky fish-spawning channel, which predetermined the purpose of the study to develop a technical justification for the possibility of its device and layout and design solutions. The factual basis was the data of surveys and studies carried out at the Kochetovsky waterworks facility. Surveys, surveys and studies were carried out in compliance with generally accepted methods, and the development of layout and structural solutions of structures using search design technologies. Two competing versions of the canal arrangement with its location along the bank of the Don River and along the riverbed of the Barsovka River have been developed. Both of the proposed solutions take into account the conditions of their device and ensure their functioning according to their intended purpose — to create conditions for the passage and spawning of fish. Each of the options has certain technical and fish science advantages, characterized by different possibilities for attracting fish to the channel, their passage from the lower reaches of the hydroelectric power plant to the upper and spawning in the channel tract. The work was carried out in the order of pre-design study, which determines the technical feasibility of the fish-spawning channel and establishes its hydrometric parameters. The choice of the option from the two proposed is proposed to be carried out by specialists of the fisheries sector, taking into account the ratio of the potential possibilities of channels for passing and spawning certain species and quantities of fish, and their technical and economic indicators.