Investigating the effectiveness of a fish-protection structure of the reclamation water intake

DRAGUNOVA, S.M.; Kuznetsov, Evgeny; Khadzhidi, Anna; Koltsov, Alexander; Sharaby, Noureldin

doi:10.1051/e3sconf/202021007008

Cited by 6 publications

(3 citation statements)

References 8 publications

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“…But, according to the conditions of their application and the nature of the means of influence, as well as the reaction of aquatic environment to these means, a wide variety of options arise (as evidenced by the experience of operating regulated sections of rivers, water intake waterworks, engineering communications, etc.) [25,26,27].…”

Section: Consequences Of Degradation Of Small Rivers [11]mentioning

confidence: 99%

Analysis of Impact of Urbanization Development on the Deterioration of Ecological State of Rivers

Бандурин

Prikhodko

Bandurina

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The peculiarity of small rivers is the dependence of erosion-accumulative processes in their beds on the intensity of soil erosion in the catchment area: the smaller the river, the greater the contact with the catchment area of its channel, where mineral particles, washed off from its area, directly enter it. Soil erosion leads to the entry of an excessive amount of them into the channel of a small river, as a result of which sediment accumulation begins in it, siltation of the channel occurs. It leads to changes in the water regime of small rivers - a decrease in inter-soil runoff (up to the drying up of rivers), a sharp reduction in underground power supply. In the humid zone, due to the high water content, the siltation of small rivers is poorly expressed and has a local character. Siltation of small rivers is especially characteristic for the forest-steppe and steppe zones, as well as for the south of the forest zone. In the steppe zone of the European part of Russia, as a result of siltation, rivers of the first order completely disappeared, up to the fourth (up to 40-50 km long), leading to a total reduction of the river network by up to 30 %. In the forest zone, due to the disappearance of sources, the number of rivers of the first and second orders (up to 20 km long) decreased by 2.2 times. During the agricultural period (about 300 years), a layer of sediment with a thickness of 0.5 to 1 m accumulated in the beds and floodplains of small rivers in the southern half of the European part. The erosion of small riverbeds reaches on average only 20 % of washed off products, which is about 60 % of the total river sediment runoff. The rate of siltation of small rivers in the Don basin is 6-12 mm / year with a length of up to 25 km and about 1 mm/year with a length of 100 km and above. Siltation of small rivers is not typical for regions where the soil is washed away by meltwater, since the maximum flow of sediment into the rivers coincides with high water, when the channel-forming activity of water flows is most active.

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Section: Consequences Of Degradation Of Small Rivers [11]mentioning

confidence: 99%

Analysis of Impact of Urbanization Development on the Deterioration of Ecological State of Rivers

Бандурин

Prikhodko

Bandurina

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…With regard to the conditions of fish diversion they evaluate, first of all, the transverse circulation of the flow arising at the turn and affecting the distribution of juvenile fish in the cross section. In the course of studying the inlet portals of fish-passage-spawning channels (Dragunova et al, 2020), it was found that the optimal angle for fish attraction is ∝po≈36°, at which the transverse circulation covers the entire cross-section in the flow attracting fish.…”

Section: Estimation Of the Flow Characteristics In The Inlet Portal S...mentioning

confidence: 99%

Optimization principles for inlet portal designs of gravity fish outlets of fish protection structures of water intake facilities

Benin

Mikheev

Borovskoy³

2022

Nexo Revista Científica

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Prevention of juvenile fish from entering water intakes for various economic purposes utilizing a fish protection structure design is associated with the need to divert protected juvenile fish (fish outlet) to a safe place of a water source while maintaining its viability. The development of principles for selecting fish outlet structural elements is based on the existing hydraulic and biological requirements to ensure the effective movement of fish outside the influence of water intake. For the conditions of an open gravity fish outlet, the features of functioning and possible ways of its central element optimization are considered: the inlet part, the receiving section, and the transition section. Based on the analysis of the most characteristic features of the flow formation in the zone of the water intake influence, the conditions for the layout of the inlet part of the fish outlet are determined. The technical solution of the receiving section is based on the design features and calculation of the hydraulic parameters of the pressure nozzles. Moreover, the structural elements of the receiving section should be a sequential combination of nozzles from the functional aspect: a conical confuser – a cylindrical nozzle- conical diffuser, and the hydraulic conditions should correspond to biological requirements and ensure a flowing current that is safe for fish; the analysis of hydraulic and technical conditions of fish outlet is given. From the standpoint of modern hydraulic and biological requirements and the knowledge of fish behavior patterns, the optimal design is proposed for the design of the inlet portal of an open gravity fish outlet of the fish protection structure of the water intake facility.

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“…For the manufacture of geotextile containers, the following types of polymers are most often used: thermoplastics; crystal thermoplastics; elastomers; thermoplastic elastomers [18,19]. Geotextile container made of high-strength fabric materials is a container made of filtering fabric geotextile in an unfilled state is presented in the form of a shell, equipped with a pump for water suspension supply (pulp from sediments, silt, sludge, soil) into the container (Figure 1).…”

mentioning

confidence: 99%

Improvement of design parameters of geotextile containers made of polypropylene for removal of silt layers and industrial waste

Бандурин

Bandurina

Bandurin

2022

IOP Conf. Ser.: Earth Environ. Sci.

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The article deals with the issues of improving the design parameters of geotextile containers made of polypropylene for the removal of silt layers and industrial waste as exemplified by the Krasnodar reservoir. The article presents statistics of waste accumulation in the Russian Federation in recent years. A new technology for transportation and disposal of liquid waste is proposed. The calculation of the parameters of geotextile containers made of high-strength fabric materials based on polypropylene has been developed. The development of chemical industry has allowed us to offer a new cost-effective innovative technology of dewatering and waste disposal based on the use of geotextile containers made of high-strength fabric material. In the Russian Federation, more than 3.5 billion tons of waste are accumulated annually, the amount of which increases with the growth of economic activity. Of the waste produced in 2020, 47% was placed at the enterprises’ own facilities, and 19% was buried. In order to improve the state of the environment, it is necessary to improve waste storage and disposal technologies. The use of geotextile containers made of high-strength fabric materials for dewatering and waste disposal is the most environmentally and cost-effective technology that has no restrictions and contraindications for technical equipment and has all the necessary indicators of strength, rigidity and reliability for effective use.

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Investigating the effectiveness of a fish-protection structure of the reclamation water intake

Cited by 6 publications

References 8 publications

Analysis of Impact of Urbanization Development on the Deterioration of Ecological State of Rivers

Analysis of Impact of Urbanization Development on the Deterioration of Ecological State of Rivers

Optimization principles for inlet portal designs of gravity fish outlets of fish protection structures of water intake facilities

Improvement of design parameters of geotextile containers made of polypropylene for removal of silt layers and industrial waste

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