The article developed a mathematical model of the processes of siltation of reservoirs, taking into account the energy state of the flow, and proposed a calculation method. In the process of siltation of the reservoir, the dependence of the volume on the change in the water level in the reservoir was estimated. On the basis of studies carried out in full-scale field conditions, the recommended calculation method is comparatively evaluated and analyzed. Field studies were carried out in the Chimkurgan, Tashkent and Yuzhno-Surkhan reservoirs. A relationship is obtained that expresses the dependence of the relative volume of siltation of the reservoir on its relative depth (the correlation coefficient is 0.96), as a result of the analysis of the collected information based on mathematical statistical methods. Based on the analysis of the above studies, it was noted that the siltation of the reservoir is 2-3 times more than the design parameters. Measurements during operation showed that the siltation in the South-Surkhan reservoir is 1.3 times more, in the Tashkent reservoir it is 2 times more, in the Chimkurgan reservoir it is 3 times more than in the design one. One of the main reasons for the increased loading of sediments in reservoirs, neither in the project, as well as in the process of operation, does not provide for measures against siltation of reservoirs. The proposed method for calculating the siltation of reservoirs makes it possible to assess the change in its volume, which can be used in the development of measures to clean up the reservoir from siltation.
Lotsari E., Wang Y., Kaartinen H., Jaakkola A., Kukko A., Vaaja M., Hyyppä H., Hyyppä J., Alho P., 2015. Gravel transport by ice in a subarctic river from accurate laser scanning. Geomorphology. Elsevier, 246, Рр.113–122. https://doi.org/10.1016/j.geomorph.2015.06. 009
Arifjanov A., Samiev L., Akmalov Sh. Dependence of Fractional Structure of River Sediments on Chemical Composition. International Journal of Innovative Technology and Exploring Engineering (IJITEE) ISSN: 2278-3075, Volume-9 Issue-1, November 2019. http://staff.tiiame.uz/ storage/users/75/articles
Arifjanov A., L. Samiev, I. Ahmedov Calculation of bottom sediments in mountain rivers based of field data. Asian Journal of Research. Elsevier No 1-3, 2019.
Jurík Ľ, Zeleňáková M. Kaletová T. Arifjanov A. Small Water Reservoirs: Sources of Water for Irrigation. The handbook of environmental Chemistry. (Nitra. Slovaca). Elsevier, Volume 69, 2019, Pp 115-131.
Karaushev A. Theory and methods of calculation of river sediments (Leningrad Hydrometeoizdat 1977) 444 р.
Fatkhullaev A. Samiev L., Channel processes and river sediments Tashkent, 2017, 132 p.
Sumin Li, Liwei Yuan, Hua Yang, Huaming An, Guangjin Wang, “Tailings dam safety monitoring and early warning based on spatial evolutionprocess of mud-sand flow” , Safety Science Journal. Elsevier, № 124 (2020) https://www.sciencedirect.com/science/article/ pii/S0925753519321903
Gapparov F.A., Narziev J., Umarov M. Suv omborlari loyikalangan khazhmining uzgarishini bakholash [Assessment of changes in the volume of turbid reservoirs] "Actual problems of water management and reclamation of irrigated lands" (Proceedings of the Republican scientific-practical conference, December 12, 2011), SANIIRI Tashkent, 2011.Pp.169-172. (in Uzbek)
Brandt M J, Johnson K M, Elphinston A J, Ratnayaka D D, Hydraulics Twort’s Water Supply. Elsevier,Pp. 581–619 (2017) https://www.sciencedirect.com/book/9780081000250/tworts-water-supply
Skrylnikov V.A. Raschyot zaileniya vodokhranilish [Calculation of siltation of reservoirs]. Proceedings of the Academy of Sciences of the Uzbek SSR. Tech Series Science. Tashkent 1988. No 8. Pp. 30-33. (in Russian)
SadykovA.Kh., Gapparov F.A. Metod rascheta ezhegodnogo sokrachsheniya ob`yoma vodokhranilisha na osnove vodnykhbalansov predyduchshikh let ekspluatatsii [Method for calculating the annual reduction in the reservoir volume based on the water balances of the previous years operation]. Sat. scientific works (on the 80th anniversary of SANIIRI named after VD Zhurin). Tashkent, 2006. 51 p. (in Russian)
Hsun-Chuan Chan, Hsin-Kai Yang, Po-Wei Lin, Jung-Tai Lee “Discharge formula for flows over open-check dams” Flow Measurement and Instrumentation Journal. Elsevier, № 72 (2020) https://www.sciencedirect.com/science/article/pii/S0955598619302304
Sami Hassan Elsayed Taglawi, Improving the methods for developing scenarios for managing the operation of reservoirs on rivers with abundant sediment flow. Moscow. 2010. 199 р.
A.V. Rakhuba, M.V. Shmakova Matematicheskoy modelirovanie dinamiki zaileniya kak faktora evtrofirovaniya vodnikh mass Kuybyshevskogo vodokhranilishcha [Mathematical modeling of the dynamic characteristics of the natural masses of the Kuibyshev reservoir]. Water ecosystems, St. Petersburg, 2015. Рр-189-193.(in Russian)
Arifjanov A.M., Apakxojaeva T.U., Dusan H. Sediment movement modein Rivers of Uzbekistan environmental Aspects Acta Horticulturae et regiotecturae Journal. (Nitra. Slovaca) 2018. Pp.10-13
Ni, W., Wang, Y., Zou, X., Zhang, J and Gao, J. Sediment dynamics in an offshore tidal channel in the southern Yellow Sea. International journal sediment research. Elsevier, Vol.29, 2014. Pp. 246-259. https://www.sciencedirect.com/science/article/pii/S1001627914600408
M. ANDREDAKI, A. GEORGOULAS, V. HRISSANTHOU, and N. KOTSOVINOS, Assessment of reservoir sedimentation effect on coastal erosionin the case of Nestos River, Greece. International Journal of Sediment Research 29. Elsevier, (2014) Рр. 34-48 https://www.researchgate.net/publication/261371724
Lucille Furgerot, DominiqueMouaze´, Bernadette Tessier, Laurent Perez, Sylvain Haquin, Pierre Weill, Alain Crave Sediment transport induced by tidal bores. An estimation from suspended matter measurements in the Se´e River (Mont-Saint-Michel Bay, northwestern France). ComptesRendus Geoscience Journal. Elsevier, 348 (2016). Pp. 432-441.
G.Davranov, G.Firlina. Konstruktivno tekhnologicheskie meropriyatiya po bor`be s zaileniem malykh i srednikh ruslovikh vodokhranilischsh [Design and techno-logical measures to combat siltation of small and medium-sized channel reservoirs] Technique. Technology. Engineering. Tashkent 2017. No 2. Рр. 108-112. (in Russian)
Piotr Jacek Gierszewski, MichałHabel, Jacek Szmańda, Małgorzata Luc, Evaluating effects of dam operation on flow regimes and river bed adaptation to those changes Journal. P.J. Gierszewski et al.Science of the Total Environment Journal. Elsevier, № 710 (2020) Pp. 136-144 https://www.sciencedirect.com/science/article/pii/S0048969719361984
Arifjanov, A.M.; Gapparov, F.; Apakhujayeva, T.U.; and Xoshimov, S.N.
"ANALYSIS OF THEORETICAL AND NATURAL FIELD STUDIES OF RESERVOIR SILLING,"
Irrigation and Melioration: Vol. 2020
, Article 13.
Available at: https://uzjournals.edu.uz/tiiame/vol2020/iss3/13
Agricultural Economics Commons, Agricultural Education Commons, Environmental Engineering Commons, Hydraulic Engineering Commons, Other Civil and Environmental Engineering Commons, Other Engineering Science and Materials Commons, Other Mechanical Engineering Commons