Dynamically stable sections of large soil canals taking into account wind waves

Eshev, Sobir; Rakhimov, Ashraf; Gayimnazarov, Isroil; Isakov, Alisher; Shodiev, Bobur; Bobomurodov, Furkat

doi:10.1088/1757-899x/1030/1/012134

Cited by 26 publications

(20 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to overcome this issue, we have proposed a new design of the intake structure, which is equipped with an additional device that makes it possible significantly complicate sedimentation at the bottom of the fore-chamber [13,19].…”

Section: Methodsmentioning

confidence: 99%

“…This circumstance in the front chamber negatively affects the operating parameters of the pumps, their productivity decreases, the efficiency decreases, and the energy consumption increases. Observations have established that excessive sediment deposition in front of the suction pipelines leads to a decrease in the efficiency of the pump to 3.0 % [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A device for reducing the siltation of the front chamber of the pumping station in irrigation systems

et al. 2021

Self Cite

View full text Add to dashboard Cite

It has been determined that the reduction of siltation of the front chamber is necessary because the deposited sediments seriously violate the planned hydraulic structure of the flow when water is sucked up by pumps, as a result of which their efficiency decreases. The method of calculating the pipeline system of a new device designed to significantly reduce the siltation of the front chamber of irrigation pumping stations by artificially creating turbulence in the water flow in the bottom layer of the structure is presented. This calculation methodology is based on the use of the theory of flooded water jets, which makes it possible to determine the main characteristics of the jet. The latter allows calculating the design parameters of the pipeline system. The results of experimental studies are presented to compare the calculated data with the results of experiments, as well as to determine the effectiveness of the proposed device for a significant reduction in siltation of the front chamber of irrigation pumping stations.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A device for reducing the siltation of the front chamber of the pumping station in irrigation systems

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…The dynamics of the hydraulic and alluvial flow regimes in the bed of the pumping station inlet channels were studied in [7][8][9][10][11][12][13][14][15]. Sediments occur due to the hydrodynamic effect of the flow on the stand plate in the presence of cavitation, eroding water flow rate in the channels, and dynamic instability of large soil channels with wind waves [16][17][18]. In addition, the water flowof the Amu Darya River has a high degree of sediment saturation.…”

Section: Introductionmentioning

confidence: 99%

Irrigation sedimentation tanks in the bed of the pumping station inlet channels

et al. 2021

View full text Add to dashboard Cite

The article analyzes the dynamics of channel processes in the irrigation pumping station inlet channels. The field studies of hydraulic and alluvial sediment regimes in the supply channels of pumping stations are analyzed and summarized. The studies of supply channel water flow under conditions of extremely high turbidity of the flow and variability of the morphometric characteristics of the channel are presented. The conditions under which the Saint-Venant equations satisfactorily describe the channel flows in the bed of the supply channels are given. Saint-Venant's twodimensional equations were numerically implemented using an explicit finite-difference scheme. In addition, the results of calculations of the flow field in the supply channels are presented. According to the results of numerical studies, the width of the sedimentation tank was taken to be equal to the design width of the channel, and the speed of water flow in it was 0.25 m/s. The length of the sedimentation tank, ensuring the retention of sediments of the finest fraction (0.05 mm in diameter), was 1042 m. The siltation time of the sedimentation tank can be reduced by 15…20% and amount to about 15 months, considering the unevenness of the velocity distribution diagram in the horizontal plane and the trapezoidal crosssection of the clarifier. Nevertheless, the arrangement of two parallel chambers of the sedimentation tanks makes it possible to be stable for a sufficiently long time.

show abstract

“…Several empirical and semi-empirical formulas have now been proposed for the determination of leaching rates in bound and non-cohesive soils. These are mainly formed from different approaches to the boundary equilibrium of the particle or by introducing coefficients that take into account various factors affecting soil errosion [1,3,8], [11][12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…corresponding to the onset of solid particle motion, is also used. This approach has been studied by many researchers [14][15][16][17][18][19][20].…”

mentioning

confidence: 99%