to develop structural solutions for recreation areas for fish, arranged on straight sections of fish channels.
Materials and methods. The empirical basis for the development was the data of studies carried out on the existing fish passage channels and fish passage locks of the Don cascade of low-head river hydroelectric facilities, as well as materials from known and author's studies of the swimming ability and behavioral characteristics of anadromous migratory fish. When processing experimental data, methods of analysis and synthesis of experimental material were used, and when developing constructive solutions for recreation areas, experimental design technologies were used.
Results and discussion. The initial materials of research on the existing fish passage structures (fish passage locks and fish passage channels) determined the need for construction of recreation areas for fish migrating through them in the fish passage channels. Structurally, recreation areas are formed by the arrangement of deepened or expanded sections of fish channels tracts, which makes it possible to reduce the flow velocities in them, increase the volume of living space and create conditions for restoring the energy potential of migrating aquatic organisms. The geometrical parameters and hydraulic characteristics of fish resting areas depend on the totality of interrelated morphometric and hydrological conditions of the canal tracts (determining the navigational conditions of migratory movement) and the biological features of anadromously migratory fish (mainly determined by swimming ability).
Conclusions. General provisions for the design of recreation areas for fish are formulated, and their typical deepened, expanded and combined design solutions for the conditions of straight tracts of fish passages are developed. A typical solution for a different-depth and extended design of a recreation area has been tested (adapted) for fish-breeding, biological, topographic and hydrotechnical conditions of the Kochetovsky fish passage channel.
doi: 10.31774/2712-9357-2022-12-2-142-157
fish passing channels, anadromous fish migrations, flow velocities, swimming ability of fish, design of recreation areas
Shevchenko A. V., Shkura V. N. Structural solutions for fish recreation areas on straight sections of fish channels. Land Reclamation and Hydraulic Engineering. 2022;12(2):142–157. (In Russ.). https://doi.org/10.31774/2712-9357-2022-12-2-142-157.
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