Studies of rational methods of water selection in water intake areas of hydroelectric power plants

Shaazizov, Farrukh; Badalov, A.; Ergashev, Alisher; Shukurov, Diyor

doi:10.1051/e3sconf/20199705041

Cited by 20 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…0 The foothill zone of the Tashkent region covers the Tien Shan mountain system in the range of heights from 300-400 to 600-1000 m above sea level. The intra-annual distribution of precipitation here is almost the same as in the desert -the maximum in March-April [1]- [29]. The mountainous zone extends above 600-1000 m above sea level.…”

Section: Methodsmentioning

confidence: 91%

See 1 more Smart Citation

Assessment of damage during the formation and passage of mudflows in the Tashkent region

Shaazizov

2021

E3S Web Conf.

Self Cite

View full text Add to dashboard Cite

Mountainous and largely foothill areas of the Republic of Uzbekistan are mudflow hazardous. In the Tashkent region, there are two mudflow river basins (dangerous concerning the manifestation of mudflows): the Chirchik river basin and the Akhangaran river basin. Based on the results of long-term observations of the Uzhydromet service, a digital map of the mudflow hazard in the Tashkent region for a century was compiled. The method for determining the damage from the action of mudflows on a specific object consists of determining the equivalent mudflow pressure according to its initial parameters. According to the methodology for assessing damage in the event of a natural emergency, the main parameters of the damaging factors were determined during the passage of a mudflow in the event of intense rainfall. The calculations were performed for two scenarios: 1) with dangerous rainfall with an intensity of 30 mm per day; 2) in case of especially dangerous rainfall with an intensity of 60 mm per day. Based on the calculations performed, the amount of damage to the national economy of the Tashkent region was determined during the passage of a mudflow caused by intense rainfall.

show abstract

Section: Methodsmentioning

confidence: 91%

“…Based on a digital map made on the Arc View 3.2 and ArcGIS 10 platforms, the most dangerous areas of mudflow manifestations were identified, and settlements located in the area of high mudflow activity were identified [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Assessment of damage during the formation and passage of mudflows in the Tashkent region

Shaazizov

2021

E3S Web Conf.

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, in practice, an unsteady flow regime often occurs, and an increase in flow turbulence is observed, which leads to complex channel processes in the water intake area [22][23][24][25][26][27]. In this regard, the topical issue is the study of the division nodes of open flows and the compilation of a methodology for calculating these nodes.…”

Section: Introductionmentioning

confidence: 99%

Flow division under a steady flow mode

Shaazizov

2023

E3S Web of Conf.

Self Cite

View full text Add to dashboard Cite

Many scientists have been involved in the division of open streams. Existing methods for calculating fission nodes do not allow choosing their optimal designs that create a favorable regime for dividing flows. Most of the available results of studies of fission nodes are scattered, non-systematic, and in some cases, contain data that do not coincide with each other. The conducted studies of division nodes were carried out mainly for the steady flow regime; the flow turbulence issues in the flow division section have been little studied. However, in practice, an unsteady flow regime and an increase in flow turbulence are often observed, which leads to complex channel processes in the water intake area. The aim of the work is to develop a refined method for the hydraulic calculation of flow division nodes with a calm flow regime. This goal is achieved by an analytical solution to the problem of determining the water depth in the nodes of flow division under a steady flow regime. The paper uses theoretical studies using the equation for changing the momentum, laboratory studies on a hydraulic model, field surveys of existing water intake units, and an analysis of the experimental data available in the literature on this issue. According to the theoretical studies, calculated dependencies were obtained to determine the depth of the main flow in front of the fission node. The equation is a cubic equation concerning the OX axis and a quadratic equation concerning the OY axis. These two equations are solved independently of each other and are intended to determine the flow depth h1, which is established before the fission node. Taking into account the simplicity of the solution for practical calculations, we recommend the first dependence, and the second dependence is proposed for performing control calculations.

show abstract

“…Summing up, it can be noted that at present, the most acute issue has become the study and verification of the stress-strain state of the material of the pressure pipelines of the Amuzang-2 pumping station, which occurs during long-term operation in conditions of corrosive and abrasive wear of the shell [19,20].…”

Section: Introductionmentioning

confidence: 99%

Instrumental inspection of pressure pipelines of the Amuzang-2 pumping station

Shaazizov

2023

E3S Web of Conf.

Self Cite

View full text Add to dashboard Cite

This article discusses the main results of the field studies conducted to assess the technical condition of the pressure pipelines of the Amuzang-2 pumping station. The research aims to check the stress-strain state of the pipeline material, which occurs during long-term operation under conditions of corrosive and abrasive wear of the shell. The research objectives were as follows: measuring the thickness of the shell of pressure pipelines of the pumping station; verification calculation of the strength of pumping station pipelines. During the research, the method of carrying out full-scale measurements using an ultrasonic device to determine the thickness of the pipeline shell and the method of calculating the stress-strain state of the pipeline material that occurs during long-term operation under conditions of corrosive and abrasive wear of the shell were used. The verification calculation was carried out for the strength of the shell material and the stability of the shape of its section: from the action of external pressure (vacuum in the pipeline), buckling, like a rod, under the action of internal pressure. According to the studies carried out, the pipelines can withstand the maximum vacuum, and the static buckling strength of the pipelines is ensured.

show abstract

Studies of rational methods of water selection in water intake areas of hydroelectric power plants

Cited by 20 publications

References 0 publications

Assessment of damage during the formation and passage of mudflows in the Tashkent region

Assessment of damage during the formation and passage of mudflows in the Tashkent region

Flow division under a steady flow mode

Instrumental inspection of pressure pipelines of the Amuzang-2 pumping station

Contact Info

Product

Resources

About