Current state of hydraulic structures at the Bratsk hydroelectric station

1996 ◽  
Vol 30 (9) ◽  
pp. 545-549
Author(s):  
A. N. Marchuk ◽  
V. L. Kubetskii ◽  
I. F. Blinov
Keyword(s):  
Hydroelectric Station ◽  
Hydraulic Structures ◽  
Current State

ANALYSIS OF HYDRAULIC STRUCTURES SUPPOSING THEIR SIMULATION IN THE FORM OF PRISMATIC SYSTEMS

2016 ◽  
Vol 6 (4) ◽  
pp. 59-63
Author(s):  
Elena S. VRONSKAYA
Keyword(s):  
Complex Structure ◽  
Hydroelectric Station ◽  
Computing System ◽  
Hydraulic Structures ◽  
Algebraic Equations ◽  
Equilibrium Equations ◽  
Strain Compatibility ◽  
Nodal Lines ◽  
Edge Conditions ◽  
Series Transformation

A new method for analysis of hydraulic structures supposing their simulation in the form of prismatic systems is proposed. Algorithm and computing system effectiveness is provided by smaller - in comparison with digital methods - equations resolution order and high accuracy of results. The main part of paper is devoted to development of algorithm of automated formation of geometric structure, edge conditions as well as of equilibrium equations and equations of strain compatibility in nodal lines of complex structure with free cinfiguration. Algorithm of equations formulation is based on solution of differential equations of plate equilibrium through Fourier series transformation and start conditions use resulting in formation of resolving system of algebraic equations where initial parameters and final values of forces are defined. The example of structural analysis of Volzhskaya hydroelectric station building during different work modes is given.

scholarly journals The role of the irrigation network in the efficient use of water

2021 ◽  
Vol 264 ◽  
pp. 03018
Author(s):  
Bakhtiyar Matyakubov ◽  
Davronbek Yulchiyev ◽  
Isomiddin Kodirov ◽  
Gulnoroy Axmedjanova
Keyword(s):  
Water Flow ◽  
Crop Yields ◽  
Normal Operation ◽  
Hydraulic Structures ◽  
Repair Work ◽  
Irrigation Network ◽  
Current State ◽  
Irrigation Networks ◽  
The Republic

The article highlights the unique role of irrigation canals in the supply of water in the required amount, depending on crop demand and the rational use of it. The study of the prevention of filtration in irrigation networks and the study of the existing malfunctions in the operation of irrigation networks, the sequence of works on the repair of irrigation networks were analyzed, and the priority of repair work was determined. The current state of the Khumbuz canal in Khiva, Khorezm region of the Republic of Uzbekistan was studied. Information was obtained and analyzed on compliance with design specifications during construction and the presence of protection zones in the canal design. Analytical indicators have been developed to extend the service life of the Khumbuz canal to ensure its normal operation and supply the required amount of water to crops. In the implementation of water supply to agricultural crops, priority is given to the repair and construction of hydraulic structures, including the Khumbuz canal. In addition, all the work to be done was planned based on the priority of the work. It has been found that the amount of water required to irrigate crops can be achieved uniformly along the length of the canal, at the top, middle, and bottom of the canal, by ensuring that the irrigation networks operate at the required level. Specific scientific recommendations have been given for the normal operation of the Khumbuz canal. Repairing the canal has been shown to increase water use by 20 percent and increase crop yields by 15 percent by ensuring that crops receive the required amount of water on time. The service area of the Khumbuz canal is 1.460 hectares. The length of the canal to be repaired is 6 km. of which 2,568 km of new concrete. The maximum water flow of the canal is 2.5 m3/sec, and the normal water flow is 2.0 m3/sec. The efficiency of the channel (canal) is 0.93. The article provides information on how to achieve efficient use of irrigation water by repairing hydraulic structures at the required level and the construction of new ones.

Assessment of the current state of the underground machine hall being constructed at the Rogun hydroelectric station

1992 ◽  
Vol 26 (3) ◽  
pp. 162-167 ◽  
Author(s):  
F. I. Gurtovnik ◽  
O. N. Zolotov ◽  
V. L. Kuperman ◽  
V. M. Mostkov ◽  
L. G. Osadchii
Keyword(s):  
Hydroelectric Station ◽  
Current State ◽  
Machine Hall

Results of inspecting hydraulic structures of the Novosibirsk hydroelectric station

1999 ◽  
Vol 33 (3) ◽  
pp. 163-165
Author(s):  
É. K. Aleksandrovskaya ◽  
V. A. Stafievskii ◽  
V. A. Komarov
Keyword(s):  
Hydroelectric Station ◽  
Hydraulic Structures

Hydraulic Modeling of Oued El Jawaher Using HEC-RAS Model for Flood Protection

2020 ◽  
pp. 199-210
Author(s):  
Himedi Maroua ◽  
Moumen Zineb ◽  
Lahrach Abderahim
Keyword(s):  
Cross Sections ◽  
Hydraulic Modeling ◽  
Current Situation ◽  
Longitudinal Profile ◽  
Hydraulic Structures ◽  
Natural Environments ◽  
Water Line ◽  
Current State ◽  
Wide Range ◽  
The City

Flooding has a wide range of impacts on societies and natural environments. In this sense, the city of Fez suffers from these problems reflected by the overflow of Oued El Jawaher during the rainy periods. This situation led the authors to compare between the current situation and the situation developed by the thresholds of Oued El Jawaher. HEC-RAS hydraulic model consists of 31 cross-sections, which will be used in the course of this study. The simulations will concern the current state and the developed state for flows of different frequencies. The result of the simulations confirms that the capacity of the proposed hydraulic structures is insufficient to transit and should be considered. To conclude, the development of the channel by thresholds, which serves for the creation of water plan, magnifies the risk of an overflow of the banks of the canal by the water line along with the longitudinal profile.

scholarly journals Operating conditions of hydraulic structures and results of their multi-factor analysis

2018 ◽  
Vol 196 ◽  
pp. 02005
Author(s):  
Alexey Romanov ◽  
Sergey Evdokimov ◽  
Alla Orlova
Keyword(s):  
Factor Analysis ◽  
Measuring Equipment ◽  
Hydroelectric Station ◽  
The State ◽  
Operating Conditions ◽  
Automated System ◽  
Hydraulic Structures ◽  
Hydroelectric Power Station ◽  
Hydroelectric Power ◽  
Geological Conditions

Nowadays, the state of Zhiguli Hydroelectric Station (HS) and its main hydraulic structures is controlled by observation of control and measuring equipment installed on these structures. There are systematic inspections and surveys carried out by both the hydroelectric power station personnel and by invited experts. The last analysis of the state of HS and its hydraulic structures was made in 1991. Since that time, a computer-based information and diagnostic system for monitoring the state of hydraulic structures has been introduced at HS. This system introduction caused the need to pay more serious attention to the reliability of the results obtained by means of control and measuring equipment, because the system monitored the condition of all hydraulic structures according to these results. Thus, the purpose of the research is to perform a multi-factor analysis of HS state and its hydraulic structures according to field studies results of all the devices installed in water-retaining structures. The results show impervious elements of HS underground circuit are not effective enough for specific geological conditions in terms of clearing the filtration head. The main drop of water head in the base occurs on HS building upper cutoff, i.e. in this zone there is a maximum filtration gradient, which is very dangerous. This process should be carefully monitored. It was revealed that several piezometers in the base do not work or their indications are not reliable, therefore it is necessary to repair and, in some cases, replace them. In future, it is necessary to equip main piezometers of HS with remote water level measuring sets and to make an automated system of condition monitoring.

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