The article discusses the issues of natural examination of the technical condition of facings of inter-farm canals, which are an important element of the irrigation and drainage systems in agriculture. The purpose of the study is to develop a methodology for natural examination of the technical condition of facings, based on the use of modern methods of surveys. The study presents the results of natural examination of the facings of inter-farm canals in the agricultural areas of the region. The study shows that the facings of inter-farm canals are subject to various types of defects, including erosion, landslides, cracks, and deformation. The severity of these defects depends on the characteristics of the soil, the design of the facings, and the hydrological regime of the canals. The authors have developed a set of criteria for assessing the technical condition of facings, taking into account the characteristics of the geological structure of the soil, hydrological conditions, and other factors affecting the stability of the facings.
The article presents the results of research on the substantiation of giving a stable shape of cross-section to the channels of hydro-reclamation systems of southern Kazakhstan. The calculations on the stability of irrigation channel slopes were made, as well as their design features and practical substantiation of stable profiles were presented. The shapes of stable slope were determined using of actual values of geotechnical parameters of slope soils. The results showed that the slope profile takes a stable shape during the channel operation, close to the parabolic.
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