Combined method for calculating the total erosion of channels composed of easily erodible grounds

Bazarov, D; Kan, E; Atajanova, D

doi:10.1088/1755-1315/1189/1/012015

Cited by 4 publications

(2 citation statements)

References 19 publications

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“…Estimated water flow rates for canal sections are shown in the table 1. head-settling tanks [19,20]. According to the methods of removing settled sediments on irrigation canals, sedimentation tanks are separated with hydraulic flushing, mechanical and hydromechanical cleaning (with the help of dredgers), and a combined cleaning system.…”

Section: Fig 2 Headwork and Supply Channel Anasaimentioning

confidence: 99%

Improvement of water distribution management methods for operating modes of machine channels

Glovatskiy,

Djumanazarova,

Saparov

et al. 2023

E3S Web of Conf.

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The ongoing research aims to improve the reliability of irrigation systems, improve methods for managing the water distribution of the operating modes of machine canals, and increase crop yields in the Nukus and Kegeyli regions of the Republic of Karakalpakstan. At present, increasing the efficiency of the operation of machine channels is associated with the development of energy and resource-saving technologies. Pumps that have been in operation for more than 25-30 years, due to physical and obsolescence, operate with low efficiency, emergencies associated with technological regimes with transients. The article analyzes changes in the processes of the hydrodynamics of control systems with optimization of sediment control on water supply structures, the danger of abrasive wear of the flow path of hydraulic units, and experimentally checks the mathematical model for managing the water distribution of operating modes. In this regard, the improvement of the design of elements and the modernization of individual units of pumping units will increase the efficiency of the entire system of machine water lifting. Recommendations are given on the inclusion of settling tanks in the composition of the head waterworks, carrying a large number of suspended sediments (more than 0.2–0.5 kg/m3) and systems for their purification.

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Section: Fig 2 Headwork and Supply Channel Anasaimentioning

confidence: 99%

Improvement of water distribution management methods for operating modes of machine channels

Glovatskiy,

Djumanazarova,

Saparov

et al. 2023

E3S Web of Conf.

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“…Coastal erosion, as one of the types of water erosion, annually causes enormous damage, and combating them in all river systems is an urgent task [1][2][3][4]. Therefore, it is unsurprising that the design and development of methods for their calculation justification are given a large place in scientific research [5][6][7][8][9], many of which are made for the conditions of lowland rivers. Many authors have focused on determining the depth of local erosion at deaf dams [10][11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Kinematic parameters of flow constrained by combined dams with through part of tetrahedra in compression region

et al. 2023

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Every major river in the world consists of mountainous, foothills, and flat areas characterized by different flow regimes. The foothill areas differ in slopes i = 0.001 ÷ 0.004, flow kinetics Fr > 0.15, and the size of sediments. The riverbed is unstable, and the banks are prone to erosion. The construction of coastal protection structures requires solving complex issues related to their design. The analysis showed that most of the studies, including ours, were carried out for the conditions of lowland rivers. This work aims to establish the flow features of the foothill sections of a combined dam with a through part of tetrahedra when the ratio of the through part ℓs to the total length of the dam ℓd is greater than or equal to 0.5, i.e., ℓs/ℓd. ≥ 0.5 The presence of a satellite flow behind the through part, a weakly perturbed core, and the presence of two zones of intense turbulent mixing was experimentally established, and the universality of the velocity distribution, which obeys the theoretical dependence of Schlichting-Abramovich, was confirmed. It is once again confirmed that the dependence is on the slope of the bottom, the Froude number, the degree of constraint, and the formation of "calm" and "critical" flow modes. The nature of the level changes along the length of the compression region in the core, and the satellite flow differ from each other, and the alignments occur in the vertical compression alignment. The problem is implemented for the "calm" mode using an integral relation characterizing the law of conservation of momentum in the flow, the equation of conservation of flow, and the differential equation of uneven motion recorded for the satellite flow behind the through part of the combined dam. The presence of a satellite flow, two zones of intense turbulent mixing, and the different nature of the leveled regime of the main and satellite flows are taken into account. A comparison of theoretical solutions with experimental ones shows their similarity.

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Improvement of damless water intake methods taking into account the hydraulic and sediment regimes of the river

Bazarov,

Norkulov,

Jamolov

et al. 2023

E3S Web of Conf.

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This article examines the movement of suspended and bottom sediments in a stream, which is considered as a complex problem in the process of water intake from rivers and canals for the needs of energy or the national economy with damless water intakes. The article presents the results of analyzes of experimental and field studies conducted by the authors of the existing problems in assessing the intensity of channel processes in the territory of the damless water intake of the Amudarya River. As well as the development of hydraulic regimes and flow regimes of sediment flow for the proposed structures based on experimental and field studies for the proposed structures is the main goal of research work. In the course of experimental studies, measurements of depth, flow and, on this basis, changes in water flow were made, which were initially elements of flow in straight and curved channels.

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Combined method for calculating the total erosion of channels composed of easily erodible grounds

Cited by 4 publications

References 19 publications

Improvement of water distribution management methods for operating modes of machine channels

Improvement of water distribution management methods for operating modes of machine channels

Kinematic parameters of flow constrained by combined dams with through part of tetrahedra in compression region

Improvement of damless water intake methods taking into account the hydraulic and sediment regimes of the river

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