CALCULATION OF THE QUANTITY OF SLUDGE SEDIMENT IN THE FOREBAY OF IRRIGATION PUMPING STATIONS Текст научной статьи по специальности «Строительство и архитектура»

INTERNATIONAL SCIENTIFIC JOURNAL VOLUME 1 ISSUE 7 UIF-2022: 8.2 | ISSN: 2181-3337

CALCULATION OF THE QUANTITY OF SLUDGE SEDIMENT IN THE FOREBAY

OF IRRIGATION PUMPING STATIONS Sattorov Alimardon Hamdamalievich

Ferghana Polytechnic Institute Ferghana 86 https://doi.org/10.5281/zenodo.7315830

Abstract. In the article, the work of calculating the amount of silt and sand particles in the forebay and water intake department of the PK-1512+01 KFK and SShK1 irrigation pumping station located in the large Fergana canal was carried out. By calculating the amount of turbid sediments, there are details on how to evenly distribute the flow in the forebay, how to prevent cavitation processes in the suction pipes of the pump, and how to increase the efficiency of the pump station operation mode.

Keywords: Water intake unit, forebay, pump, pump unit, pumping station, sediment, water transfer, flow, sand particles, turbidity, turbidity sedimentation, channel.

РАСЧЕТ КОЛИЧЕСТВА ИЛОВЫХ ОСТАНОВОВ В ФОРМЕ БУЛАВА НАСОСНЫХ СТАНЦИЙ ОРОШЕНИЯ

Аннотация. В статье проведена работа по расчету количества илистых и песчаных частиц в аванзаливе и водозаборном отделении ПК-1512+01 КФК и оросительной насосной станции СШК1, расположенных на большом Ферганском канале. При подсчете количества мутных отложений приведены сведения о том, как равномерно распределить поток в аванзаливе, как предотвратить кавитационные процессы во всасывающих патрубках насоса, как повысить эффективность режима работы насосной станции.

Ключевые слова: Водозаборный узел, аванзалив, насос, насосный агрегат, насосная станция, нанос, водоперенос, поток, частицы песка, мутность, мутноотложение, русло.

INTRODUCTION

Nowadays, there are 4.2 thousand hectares of irrigated land in our Republic, 2.3 thousand hectares of which are irrigated using pumping stations.[1] The reason for this is that the irrigated croplands are located in the upper part of the pumping station and it is necessary to transfer them under pressure.[2,3,13,14] At present, the most optimal solution to the land areas is water with the help of machine water transfer. However, when receiving water from canals, open watercourses and rivers, the muddy and sand particles in the water are causing the pump station to malfunction, the ability to transfer water, and the service life of constructions to be reduced. [4]

MATERIALS AND METHODS

The main part of the PK-1512+01 KFK and SShKl pumping station in Rishton district of Fergana region today provides water for 4103 hectares of land in Altariq region and 910 hectares of land in Rishton district. The power of the pumping station is N-1000 kW, 20 NDS D3200-75 brand 3 pumps, diameter 0-1200, length L-6050 meters, height H-50 meters are delivering water to the land area, Q-5600 m3/hour.

It is known that the KFK is affected seasonally by the sand and turbidity in the water, that is, the operation modes of the van camera change seasonally due to the water fall from the weather, floods and rains. [6]

INTERNATIONAL SCIENTIFIC JOURNAL VOLUME 1 ISSUE 7 UIF-2022: 8.2 | ISSN: 2181-3337

In view of the above, the methods of calculation by researchers of the filling of the forebay due to turbid sediments are expressed in the form of the following equations:

+ ^ = 0 (1)

Here: p-pressure, l-length, z-depth, g-relative weight, t-time, b - width. Formula (1) was expressed by some scientists as follows:

(Pi - p2)At = (zi - z2)Myb, ^ = Hi W3 = (z1 — z2)Al b Consideringthat

(2)

dW3 = (Hi — H2)dt (3)

These equations were used by other researchers in their scientific research work. These methods used the formulas s = f(q, h, v) and s = (q, h, u) in different forms to calculate the flows from each other.[7, 8,11,15,16]

Fig. 1.

Forebay and water intake section of KFK and SShK1 pumping station.

1-water intake head: 2 - water channel; 3 - forebay; 4- water intake chamber; 5 - suction pipeline of the pump. A1, A2- water channel, A3 - the edge of the forebay, A4, A5- the middle parts of the forebay, A6- the suction pipe of the pump

RESULTS

INTERNATIONAL SCIENTIFIC JOURNAL VOLUME 1 ISSUE 7 UIF-2022: 8.2 | ISSN: 2181-3337

Fig. 2.

The amount of sedimentation of turbidity in water from the indicated points since June

Table 1

Point date result Ai A2 A3 A4 As A6

Mg/l 254 243 217 186 162 146

Fig. 3.

The amount of sedimentation of turbidity in water from the indicated points since July

Table 2

Point date result A1 A2 A3 A4 As A6

Mg/l 160 152 120 80 55 40

DISCUSSION

When predicting the size and duration of Advance chamber blurring, it is possible to calculate forebay based on different operating modes. When Hnu > Hc and Hku > Hc

When it reaches the joint surface, the sedimentation process of cloudy discharge is observed and their volume is determined as follows (5,6).

AW

Cho k

= 1.2pWpreA

(5)

Here:

A =

Hr,

-Hc

Hr,

~Hku

(6)

The following expression is used to determine the height of the water level, the sediments in the forebay fall to the lower bef, and the volume of these sediments (7)

AWyuv = l,2pyuk [Wpr(1 - A) + Wc - W0X)J [7]

where: Wpr-levels change from Hnuto Hc (load) - loading due to muddy flow, kg/m3

We use the following expression (8) to determine the load in washing turbid sediments:

_ B£ß(HY,cho'k-Hku Pyuk = 122 iQ1

[8]

INTERNATIONAL SCIENTIFIC JOURNAL VOLUME 1 ISSUE 7 UIF-2022: 8.2 | ISSN: 2181-3337

where: m is sediment washing speed, mm/sec; £ cho'k — Hkusediment mark based on the design volume graph; Q, —-average monthly water flow, m3/s; The width of the furrow corresponding to Bj-Qj, m. If:

H„„ < Hr > Hi

ku

(9)

When the values are in the state, the sediments washed by the stream are removed to the lower bef, and its volume is determined by the following formula (10):

AM^u = 1,2pyukWl (10)

Here, Wj = Qp Hc-Hku if W, > W7r is accepted for calculation. The width of the front

camera is determined by this formula (11):

^ VpHp

[11]

Here vp = 1,0 + 1,2 — HP — The depth of the vanguard ism.

It is necessary to take into account the seasonal change of the channel and the amount of muddy sediments before the accounting period when calculating the volume of silting of the water intake section and the vane chamber.

CONCLUSION

In June and July, in the field practice, work was carried out on receiving water at the PK-1512+01 KFK and SShK1 irrigation pumping station and calculating sedimentary sand and turbidity in the vane chamber. It was studied that the construction with flow-directing walls is effective in achieving equal distribution of velocities and preventing the formation of air bubbles in water intake units. In forebay 108 mg/l was taken in June, and 120 mg/l in July, sedimentation of turbidity and sand particles was observed in measurement locations A1 and A6.

REFERENCES

1. Мадхадимов, М. М., Абдулхаев, З. Э., & Сатторов, А. Х. (2018). Регулирования работы центробежных насосов с изменением частота вращения. Актуальные научные исследования в современном мире, (12-1), 83-88.

2. Hamdamalievich S. A., Nurmuhammad H. Analysis of Heat Transfer of Solar Water Collectors //Middle European Scientific Bulletin. - 2021. - Т. 18. - С. 60-65.

3. Xamdamaliyevich, S. A., & Rahmankulov, S. A. (2021, July). Investigation of heat transfer processes of solar water, air contact collector. In E-Conference Globe (pp. 161-165).

4. Madaliev, M. E. U., Rakhmankulov, S. A., & Tursunaliev, M. M. U. (2021). Comparison of Finite-Difference Schemes for the Burgers Problem. Middle European Scientific Bulletin, 18, 76-83

5. Сатторов, А. Х., Акрамов, А. А. У., & Абдуразаков, А. М. (2020). Повышение

эффективности калорифера, используемого в системе вентиляции. Достижения науки и образования, (5 (59)), 9-12.

6. Abdullayev, B. X., & Rahmankulov, S. A. (2021). Modeling Aeration in High Pressure Hydraulic Circulation. CENTRAL ASIAN JOURNAL OF THEORETICAL & APPLIED SCIENCES, 2(12), 127-136.

INTERNATIONAL SCIENTIFIC JOURNAL VOLUME 1 ISSUE 7 UIF-2022: 8.2 | ISSN: 2181-3337

7. Abdukarimov, B. A., O'tbosarov, S. R., & Tursunaliyev, M. M. (2014). Increasing Performance Efficiency by Investigating the Surface of the Solar Air Heater Collector. NM Safarov and A. Alinazarov. Use of environmentally friendly energy sources.

8. Madraximov, M. M., Nurmuxammad, X., & Abdulkhaev, Z. E. (2021, November). Hydraulic Calculation Of Jet Pump Performance Improvement. In International Conference On Multidisciplinary Research And Innovative Technologies (Vol. 2, pp. 20-24).

9. Akramov, A. A. U., & Nomonov, M. B. U. (2022). Improving the Efficiency Account

Hydraulic of Water Supply Sprinklers. Central Asian Journal of Theoretical and Applied Science, 3(6), 364-370.

10. Усаров, М. К., and Г. И. Маматисаев. "Вынужденные колебания коробчатой конструкции панельных зданий при динамических воздействиях." Проблемы механики 2 (2010): 23-25.

11. Shavkatjon o'g'li, T. B. (2022). Proving The Inequalities Using a Definite Integral and Series. Texas Journal of Engineering and Technology, 13, 64-68.

12. Rashidov, Y. K., & Ramankulov, S. A. (2021). Improving the Efficiency of Flat Solar Collectors in Heat Supply Systems. CENTRAL ASIAN JOURNAL OF THEORETICAL & APPLIED SCIENCES, 2(12), 152-159

13. Abbasov, Y. S., & ugli Usmonov, M. A. (2022). Design of an Effective Heating System for Residential and Public Buildings. CENTRAL ASIAN JOURNAL OF THEORETICAL & APPLIED SCIENCES, 3(5), 341-346.

14. Умурзакова, М. А., Усмонов, М. А., & Рахимов, М. Н. (2021). АНАЛОГИЯ РЕЙНОЛЬДСА ПРИ ТЕЧЕНИЯХ В ДИФФУЗОРНО-КОНФУЗОРНЫХ КАНАЛАХ. Экономика и социум, (3-2), 479-486.

15. ugli Mo'minov, O. A., Maqsudov, R. I., & qizi Abdukhalilova, S. B. (2021). Analysis of Convective Finns to Increase the Efficiency of Radiators used in Heating Systems. Middle European Scientific Bulletin, 18, 84-89.

16. Mo'minov, O. A. O'tbosarov Sh. R."Theoretical analysis of the ventilation emitters used in low-temperature heat supply systems, and heat production of these emitters" Eurasian journal of academic research, 495-497.

17. Hamdamalievich S. A. Determination of the deposition of particles contained in the water passing through the sump well //Central asian journal of theoretical & applied sciences. -2022. - Т. 3. - №. 6. - С. 244-251.

18. Maqsudov, R. I., & qizi Abdukhalilova, S. B. (2021). Improving Support for the Process of the Thermal Convection Process by Installing. Middle European Scientific Bulletin, 18, 5659.

19. Madaliev, M. E. U., Maksudov, R. I., Mullaev, I. I., Abdullaev, B. K., & Haidarov, A. R.

(2021). Investigation of the Influence of the Computational Grid for Turbulent Flow. Middle European Scientific Bulletin, 18, 111-118.

20. Рашидов, Ю. К., Орзиматов, Ж. Т., Эсонов, О. О. У., & Зайнабидинова, М. И. К.

(2022). СОЛНЕЧНЫЙ ВОЗДУХОНАГРЕВАТЕЛЬ С ВОЗДУХОПРОНИЦАЕМЫМ МАТРИЧНЫМ АБСОРБЕРОМ. Scientific progress, 3(4), 1237-1244.

21. Рашидов, Ю. К., Орзиматов, Ж. Т., & Исмоилов, М. М. (2019). Воздушные солнечные коллекторы: перспективы применения в условиях Узбекистана. ББК 20.1 я43 Э 40.

INTERNATIONAL SCIENTIFIC JOURNAL VOLUME 1 ISSUE 7 UIF-2022: 8.2 | ISSN: 2181-3337

22. Усаров, Махаматали Корабоевич, and Гиёсиддин Илхомидинович Маматисаев. "КОЛЕБАНИЯ КОРОБЧАТОЙ КОНСТРУКЦИИ КРУПНОПАНЕЛЬНЫХ ЗДАНИЙ ПРИ ДИНАМИЧЕСКИХ ВОЗДЕЙСТВИЯХ." Научный форум: технические и физико-математические науки. 2019.

23. Usmonova, N. A., & Khudaykulov, S. I. (2021, April). SPATIAL CAVERNS IN FLOWS WITH THEIR PERTURBATIONS IMPACT ON THE SAFETY OF THE KARKIDON RESERVOIR. In E-Conference Globe (pp. 126-130

24. Nosirov A.A., №sirov I.A. Simulation of Spatial Own of Vibrations of Axisymmetric Structures EUROPEAN MULTIDISCIPLINARY JOURNAL OF MODERN SCIENCE http s://emjms.academicj ournal .i o

25. Shavkatjon o'g'li, T. B. (2022). SOME INTEGRAL EQUATIONS FOR A MULTIVARIABLE FUNCTION. Web of Scientist: International Scientific Research Journal, 3(4), 160-163.

26. Abobakirovich, A. B., Sodikovich, A. Y., & Оgli, M. I. I. (2019). Optimization of operating parameters of flat solar air heaters. Вестник науки и образования, (19-2 (73)), 6-9.

27. Usmonova, N. A. (2021). Structural Characteristics of the Cavern at a Fine Bubbled Stage of Cavitation. Middle European Scientific Bulletin, 18, 95-101.

28. Nasirov Ismail Azizovich. On The Accuracy of the Finite Element Method on the Example of Problems about Natural Oscillations. EUROPEAN MULTIDISCIPLINARY JOURNAL OF MODERN SCIENCE https://emjms.academicjournal.io

29. Nosirov A.A., №sirov I.A. Simulation of Spatial Own of Vibrations of Axisymmetric Structures EUROPEAN MULTIDISCIPLINARY JOURNAL OF MODERN SCIENCE http s://emjms.academicj ournal .i o

30. Madaliev, E. U., & qizi Abdukhalilova, S. B. (2022). Repair of Water Networks. CENTRAL ASIAN JOURNAL OF THEORETICAL & APPLIED SCIENCES, 3(5), 389-394.

31. Malikov, Z. M., & Madaliev, E. U. (2019). Mathematical simulation of the speeds of ideally newtonovsky, incompressible, viscous liquid on a curvilinearly smoothed pipe site. Scientific-technical journal, 22(3), 64-73.