DOI 10.35776/VST.2021.11.03
UDC 626.88

Shul’gin Vladimir, Nabokov Sergei

Best practice of using air-bubble curtains as part of complex fish protection structures

Summary

The results of studying the operation of complex fish protection structures with the use of air-bubble curtains are presented. A description of the operating mechanism of complex fish protection structures and the principle of operation of the air-bubble curtain is given. On the basis of a hydraulic calculation, a method for designing and using an air-bubble curtain as part of complex fish protection structures has been developed. The results of estimating the functional efficiency of the built complex fish protection structures are presented. The complex fish protection structures that include debris deflectors and air-bubble curtains and operate in an air-lift mode, effectively protect fish fry. Provided the operating parameters of the equipment and the selected alignment of the structures with account of the hydraulic and technical features of the water intake have been correctly chosen, their efficiency is guaranteed to exceed the standard values.

Key words

water intake , complex fish protection structure , fish fry , floating debris deflector , perforated pipeline , vertical fish diverting stream lines , air-lift water-air flow , air-bubble curtain

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REFERENCES

1. Pavlov D. S., Pakhorukov A. M. Biologicheskie osnovy zashchity ryb ot popadaniia v vodozaborvye sooruzheniia [Biological underpinnings of protecting fish from entering water intake facilities. Moscow, Legkaia i Pishchevaia Promyshlennost’ Publ., 1983, 264 p.].
2. Pavlov D. S., et al. Pokatnaia matritsa molodi ryb v rekakh Volga i Ili [Downstream migration of fish fry in the Volga and Ili rivers. Moscow, Nauka Publ., 1981, 320 p.].
3. Kuragina G. V., Pavlov D. S., Pakhorukov A. M. Model’nye ispytaniia vozdushno-pnevmaticheskogo sposoba zashchity ryb ot popadaniia v vodozabornye sooruzheniia. Biologicheskie osnovy primemeniia rybozashchitnykh i rybopropusknykh sooruzhenii [Model tests of an air-pneumatic method of protecting fish from entering water intake structures. Biological underpinning of the use of fish protection and fish passage structures. Moscow, Nauka Publ., 1978, pp. 152–159].
4. Darkov A. A., Ersler A. L. Ispytaniia vozdushno-puzyr’kovogo rybozagraditelia v prirodnykh usloviiakh. Biologicheskie osnovy primemeniia rybozashchitnykh i rybopropusknykh sooruzhenii [Tests of air-bubble fish barriers in natural conditions. Biological underpinning of the use of fish protection and fish passage structures. Moscow, Nauka Publ., 1978, pp. 159–166].
5. Iakovlev A. E. Razrabotka sposobov i sooruzhenii dlia zashchity ryb na krupnykh vodozaborakh [Development of methods and structures for the protection of fish at large water intakes. Doctoral dissertation in Engineering, Tver, 1997, 310 p.].
6. Kolesnikova T. V., Motinov A. M., Pakhorukov A. M. [Pneumatic fish protection device at the water intake]. Vodosnabzhenie i Sanitarnaia Tekhnika, 1985, no. 10, pp. 4–6. (In Russian).
7. Ripinskii I. I. Rybozashchitnye ustroistva dlia vodozabornykh sooruzhenii [Fish protection devices for water intake structures. Moscow, USSR Association of Hydro-Ecologists, PO Sovintervod Publ., 1991, 205 p.].
8. Mikheev P. A. Rybozashchitnye sooruzheniia i ustroistva [Fish protection structures and device. Moscow, Roma Publ., 2000, 405 p.].
9. Strel’tsova N. B., Shelestova N. A., Mirkhalikov K. V. [Evaluation of the effectiveness of fish protection devices in the water intakes of the Voronezh CHPP. Protection and restoration of hydroflora and ichthyofauna]. Proceedings of the Russian Academy of Water Management Sciences, Novocherassk, 1997, is. 1, pp. 34–38. (In Russian).
10. Shul’gin V. D. Razrabotka kompleksnykh rybozashchitnykh ustroistv s ispol’zovaniem vozdushno-puzyr’kovoi zavesy, potokoobrazuiushchikh i rybootvodiashchikh elementov [Development of complex fish protection devices using an air-bubble curtain, flow-forming and fish-diverting elements. Tver, 2002, 30 p.].
11. Posobie po proektirovaniiu rybopropusknykh i rybozashchitnykh sooruzhenii k SNiP 2.06.07-87. Pod redaktsiei B. S. Malevanchika [Manual for the design of fish-pass and fish protection structures to SNiP 2.06.07-87. Edited by B. S. Malevanchik. Moscow, 1988, pp. 79–84].
12. Proektirovanie sooruzhenii dlia zabora poverkhnostnykh vod. Spravochnoe posobie k SNiP 2.04.02-84 [Designing structures for surface water intakes. Reference Manual to SNiP 2.04.02-84. Moscow, Stroiizdat, 1990, pp. 225–240].