In this article, the situation in the selected area was completely investigated to avoid problems that arise when the water distribution facility is in a faulty position. The condition of the hydrotechnical constructions was evaluated. The priority of work on repair and construction of hydraulic structures was defined. As a result of the proper operation of hydrotechnical constructions, a uniform distribution of the volume of water necessary for irrigation of crops throughout the canal, in its upper, middle, and lower parts, was achieved. To implement these activities, first of all hydraulic engineers were trained in the management, repair, and construction of new hydraulic structures. The project documentation (business plan) for the repair hydraulic structures and construction of a new one was developed. On this basis, the repair and construction of new hydraulic structures were carried out. There were given recommendations to the specialists on improving the durability of hydrotechnical constructions. According to the recommendations it is planned to check the state of hydrotechnical constructions after each water and to register them. Several concepts have been proposed to extend the life of the hydrotechnical construction. By repairing and building new hydrotechnical constructions, in the middle and bottom of the canal, and all water distribution canals the water supply to 1015 beneficiaries has been improved. It was achieved an increase in crop yield by 15% and 22% of water savings.
The article is devoted to the study of the influence of the damless water intake on the hydraulic and alluvial regime of the river, the channel of which passes through easily washed out soils. The analysis of the dynamics of the river bed morphometry and hydraulic elements of the flow in the area of the damless water intake is carried out. As a result of the analysis of the data of long-term field studies and hydrometric measurements at the closest section to the damless water intake and in the area of the damless water intake of the Amudarya River, functional relationships were established between the morphometric parameters of the channel and the hydraulic parameters of the flow. The dynamics of the Shezi coefficient, hydraulic resistance, and the channel roughness coefficient in connection with the hydrodynamic characteristic of the flow are established.
The article considers a numerical study of the movement of water flow in the Amu-Bukhara Machine Channel (ABMCh-Bukhara region). Water intake to the inlet channel is carried out from one of the most muddy rivers in Central Asia in a damless manner, therefore, ensuring the flow of clarified water into the anterior chambers of pumping stations is an urgent task. A numerical study is a study of the hydrodynamic parameters of the flow and, based on the data obtained, the developed recommendation is the aim of this work. The determination of the main hydraulic parameters of the flow moving in the riverbed by numerical research is accepted as a research method. According to the developed model, consisting of hydrodynamic equations, based on the law of conservation of momentum and mass, data on the dynamics of velocities of the ABMCh supply channel are obtained and zones of uneven flow in the channel are determined. A recommendation has been developed that allows quasi-uniform movement, which helps to prevent the formation of deformation of the supply channel of the pumping station and the entry of suspended and bottom sediments into the chamber of the pumping station.
The article is devoted to the modal analysis of frameless arch structures based on lightweight gauge steel structures (LGSS). The relevance of the study is due to the need to take into account dynamic effects when calculating the load-bearing capacity. Dynamic loads are a crucial factor affecting the stress-strain state of arch structures. The paper presents theoretical studies of the influence of the main geometrical parameters of the arch structure made of cold-formed thin-walled steel profiles on the first eigenfrequency. The dependences between the dimensions of arched structures and eigenfrequencies are obtained. It is proved that to determine the load-bearing capacity of frameless arch structures with the span L > 12 m, it is necessary to determine the eigenfrequencies of vibrations of the structure.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.