Method of calculation and forecast of the degree of snow capacity of channels
Koybakov S.M. Sennikov M.N. Tolkinbaev T.A. Omarova G.E. Mukhtarov Zh.M.
2023National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2023#1Issue 457102 - 112 pp.
The article substantiates the regularities of the formation of snowdrifts in the channel excavation based on field, laboratory and computational-theoretical studies, since the process of snow-bearing channels is insufficiently studied. During the operation of the Irtysh-Karaganda canal, the experience of studying and solving issues of determining optimal methods of combating these processes has been determined. The substantiation of the influence of the direction of the impact of the blizzard wind and the parameters of the channel excavation on the degree of its susceptibility to snowdrifts given. In addition, based on the assessment and forecast of the possible consequences of drifts, methods proposed to combat winter difficulties on the canals in the form of congestion and congestion phenomena, which leads to a decrease in the channel capacity up to the complete cessation of water supply. In this case, the wandering of the stream causes the re-formation of the channel. The water retention formed above the jamming zone contributes to its exit to the shores or the breakthrough of the accumulated snow and ice mass down the channel, below this section there is a subsidence of snow and ice cover to the bottom and shores. Such difficulties can paralyze the functioning of the water supply tract, causing the termination of water supply to consumers for a long time. Based on theoretical layouts, the transfer of snow particles at different angles of attack and wind speeds affecting the formation of the channel recess slope is justified. The dynamics of changes in the conjugate values of the wind angle of attack and the slope coefficient of the snow - bearing profile at different values determined. Various schemes of snowdrift in trapezoidal and polygonal channels have calculated. The assessment of the state of snow-carrying capacity of the trapezoidal cross-section channel in various cases of the snow transfer process has carried out.
Canal slope , Coefficient of natural slope of snowdrift , Jam-jam phenomena , Prevailing direction of blizzard wind , Snow-free profile , Snowdrift , сanal
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Taraz Regional University named after M.Kh. Dulati, Taraz, Kazakhstan
Eurasian National University named after L. Gumilyov, Astana, Kazakhstan
Taraz Regional University named after M.Kh. Dulati
Eurasian National University named after L. Gumilyov
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