scholarly journals THE SOVIET AGRARIAN POLICY IN THE IRRIGATION FIELD IN UZBEKISTAN (1950-1990)

2021 ◽  
pp. 21-24
Author(s):  
Oybek Kamilovich Komilov ◽  
Doniyorbek Murodjon ugli Sobirov
Keyword(s):  
Irrigation System ◽  
Irrigation Canals ◽  
Soviet Government ◽  
Historical Material ◽  
Agrarian Policy ◽  
Pumping Stations ◽  
Practical Life ◽  
Large Irrigation

In the article it is analyzed the policy of the centre of the further strengthening mono cultural clap in Uzbekistan that in undertaken measures on building of large irrigation canals and pumping stations in republic on the bases of archival sources and a historical material in 50-80 XX century. Besides, research showed that Soviet government, having outlined the appropriate political and economic goals in Uzbekistan, began to introduce into practical life a policy related to the development of the irrigation system and the construction of reclamation facilities.

scholarly journals History Of Irrigation In Uzbekistan (1950-1990)

2020 ◽  
Vol 02 (11) ◽  
pp. 623-627
Author(s):  
Oybek Komilov ◽  
Keyword(s):  
Irrigation Canals ◽  
Historical Material ◽  
Pumping Stations ◽  
History Of ◽  
Large Irrigation

In the article it is analyzed the policy of the centre of the further strengthening mono cultural clap in Uzbekistan that in undertaken measures on building of large irrigation canals and pumping stations in republic on the bases of archival sources and a historical material in 50-80 XX century.

scholarly journals Effect of parallel connection of pumping units on operating costs of pumping station

2019 ◽  
Vol 97 ◽  
pp. 05014 ◽  
Author(s):  
Nazir Ikramov ◽  
Eduard Kan ◽  
Mirasil Mirzoev ◽  
Takhir Majidov
Keyword(s):  
Irrigation System ◽  
Operating Mode ◽  
Operating Costs ◽  
Hydraulic Calculation ◽  
Parallel Operation ◽  
Capital Costs ◽  
Pumping Stations ◽  
Pressure Pipeline ◽  
Large Irrigation ◽  
Pumping Units

In Uzbekistan, as well as in many other countries of the world, pumping units operate in parallel into a common pressure pipeline at some pumping stations of the irrigation system. This was done mainly to save on the capital costs of the pipeline. Analysis and hydraulic calculation of the existing large irrigation pumping stations with pumping units operating in parallel showed that at some of them the conditions of parallel operation of pumping units were impaired. As a result, a negative hydraulic process arises, in the form of self-induced vibrations of the water flow in the pipeline, which leads to various damage and deformation of the pressure pipeline and pipeline supports. The calculations showed that with different modes of pumping units operating together, the power consumption at the Amu-Bukhara-1 and Namangan pumping stations, accounting for one unit increases by 0.72 ... 6.53%, and at the Amu-Bukhara-2 and Amu-Zang-2 pumping stations, this index, on the contrary, decreases by 0.32 ... 1.67%. Therefore, a properly selected operating mode of parallel-connected pumping units will lead to a decrease in operating costs, i.e. decrease in the prime cost of raised water.

scholarly journals Irrigation projects in Iraq

2020 ◽  
pp. 35-160
Author(s):  
Mukhalad Abdullah ◽  
Nadhir Al-Ansari
Keyword(s):  
Irrigation System ◽  
Early History ◽  
Abu Ghraib ◽  
Irrigation Canals ◽  
Seismic Effects ◽  
Large Dams ◽  
Irrigation Projects ◽  
Excess Water ◽  
Pumping Stations ◽  
Large Floods

Iraq has a unique irrigation system since the early history, these systems are functioning through many irrigation projects built over `Tigris and Euphrates Rivers. Irrigation projects include several categories, which are dams, barrages, canals, drains, pumping stations, regulators, and reservoirs. There are six large dams inside Iraq, 5 are existing in Tigris basin, and one in Euphrates basin, these dams which were built since 1950’s are suffering from several issues, like foundation liquefaction, seismic effects, and others. Tharthar Lake, Habbaniyah Lake, Razzaza Lake, and Southern Marshes are also one of the main projects in Iraq to control flood and storing excess water in some. These lakes serve in protection of the main cities during large floods. There are also many barrages on Tigris and Euphrates, some of these barrages are part of Tharthar and Habbaniyah projects, while others serving the irrigation projects in Mesopotamia. On Euphrates, there are several irrigation projects, where the projects upstream Fallujah city are almost small or medium projects irrigated by pumping. Then, in the rest of Euphrates, there are Great Abu Ghraib project, Great Mussayab, HillaKifil, some small projects, and Kifil-Shinafiyah projects. Also, Hilla branch which is the largest branch in Iraq from Euphrates, where this branch is irrigating several irrigation projects. On Tigris basin, there are Jazeera project irrigated by pumping from Mosul Dam, Kirkuk project that is irrigated from Lesser Zab River, and Diyala are projects. Inside Mesopotamia and over Tigris reach, there are Ishaqi project, Nahrawan project, Middle Tigris projects, Dujailah project, Dalmaj project, and Gharraf Canal projects. In the middle of Mesopotamian plain, Main Outfall Drain was completed in 1992, this grand drain are serving around 6 million donum of farmlands. Keywords: Dams, Barrages, Irrigation canals, Iraq.

scholarly journals The history of national constructions of 1940 (by the example of the Ferghana Valley)

2020 ◽  
Vol 9 (1) ◽  
pp. 189-192
Author(s):  
Kabulzhan Makhamadzhanovich Nasritdinov
Keyword(s):  
20Th Century ◽  
High Speed ◽  
Hydraulic Structures ◽  
Irrigated Agriculture ◽  
Irrigation Canals ◽  
Soviet Government ◽  
Ferghana Valley ◽  
History Of ◽  
Agricultural Areas

Based on scientific, historical and archival sources the author of the paper analyzes the history of developing plans aimed at irrigation of virgin lands in the central part of the Ferghana Valley in the first half of the 20th century by large Russian scientists and specialists. The author also shows a historical picture of the construction of the irrigation facilities of the Ferghana Valley using the high-speed hashar folk method in 1940. With the construction of hydraulic structures such as the northern and southern Ferghana canals, a new stage began in the development of irrigated agriculture in the Ferghana Valley, since the water of these hydraulic structures made it possible to irrigate new virgin lands in the central part and foothill areas of the Ferghana Valley. But it should be noted that these large and complex irrigation canals were constructed by the peoples of Uzbekistan mainly with the use of primitive tools such as a hoe, a crow, a shovel, a stretcher and pickaxes. For nearly 80 years, these hydraulic structures have provided agricultural areas with life-giving water. The author of the paper also summarizes the essence of economic measures carried out by the Soviet government on the development of irrigated agriculture in the valley.

scholarly journals Design of Water Distribution System: Appropriateness of Structured System in Large Irrigation Projects in Nepal

2016 ◽  
Vol 19 ◽  
pp. 25-30
Author(s):  
Basistha Adhakari
Keyword(s):  
Distribution System ◽  
Distribution Systems ◽  
Water Distribution ◽  
Irrigation System ◽  
Command Area ◽  
Irrigation Project ◽  
Irrigation Projects ◽  
Structured System ◽  
Large Irrigation ◽  
Area Development

Many large irrigation projects in Nepal operate under command area development works that emphasize on-farm water distribution and management. These projects have specific design characteristics that were planned to comply with available water resources, climatic conditions, soil type, and water distribution technology. The water distribution technologies differ based on the design needs of each individual project and the design preferences of various foreign consulting firms. This article focuses on the issues of planning and designing water distribution systems of large irrigation systems at the irrigation service delivery level. The layout planning of an irrigation system is an important aspect of design for water distribution, typically guided by hierarchical system. This article also highlights the existing canal hierarchy of these systems and their appropriateness for efficient water distribution. Furthermore, the appropriateness of the structured system is also examined in the Sunsari Morang Irrigation Project. The article concluded with some suggestions for planning and designing command area development works of forthcoming large irrigation projects such as the Sikta Irrigation Project, the Babai Irrigation Project, and the Mahakali Irrigation Project Stage-III.HYDRO Nepal JournalJournal of Water, Energy and EnvironmentIssue: 19Page: 25-30

scholarly journals Generalizing Fuzzy SARSA Learning for Real-Time Operation of Irrigation Canals

Water ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2407
Author(s):  
Kazem Shahverdi ◽  
J. M. Maestre ◽  
Farinaz Alamiyan-Harandi ◽  
Xin Tian
Keyword(s):  
Performance Indicators ◽  
Action Learning ◽  
Irrigation Canals ◽  
State Action ◽  
Time Operation ◽  
Real Time Operation ◽  
Southwest Of Iran ◽  
Large Irrigation ◽  
Q Function ◽  
Reinforcement Learning Model

Recently, a continuous reinforcement learning model called fuzzy SARSA (state, action, reward, state, action) learning (FSL) was proposed for irrigation canals. The main problem related to FSL is its convergence and generalization in environments with many variables such as large irrigation canals and situations beyond training. Furthermore, due to its architecture, FSL may require high computation demands during its learning process. To deal with these issues, this work proposes a computationally lighter generalizing learned Q-function (GLQ) model, which benefits from the FSL-learned Q-function, to provide operators with a faster and simpler mechanism to obtain operational instructions. The proposed approach is tested for different water requests in the East Aghili Canal, located in the southwest of Iran. Several performance indicators are used for evaluating the GLQ model results, showing convergence in all the investigated cases and the ability to estimate operational instructions (actions) in situations beyond training, delivering water with high accuracy regarding several performance indicators. Hence, the use of the GLQ model is recommended for determining the operational patterns in irrigation canals.

Environment and Population: The Collapse of Large Irrigation Systems Reconsidered

2004 ◽  
Vol 46 (3) ◽  
pp. 451-468 ◽  
Author(s):  
Stuart J. Borsch
Keyword(s):  
Global Warming ◽  
Irrigation System ◽  
Modern World ◽  
Agricultural Systems ◽  
Irrigation Systems ◽  
Great Abundance ◽  
Agricultural Revolution ◽  
Large Irrigation ◽  
Dry Farming

Irrigation systems were the first source of great abundance that stemmed from the Agricultural Revolution. They were also humanity's first great environmental curse. Long before issues of global warming and freshwater shortages haunted the modern world, irrigation systems blessed and bedeviled humans with their promise and peril. While a well-ordered functional irrigation system provided inhabitants with seed-to-yield ratios that were the envy of any dry-farming regime, these same irrigation systems could collapse in toto, bringing disaster on a scale never seen in rain-fed agricultural systems.

Use of polyvinyl chloride liners for large irrigation canals in Alberta

1987 ◽  
Vol 24 (2) ◽  
pp. 252-259 ◽  
Author(s):  
N. F. Weimer
Keyword(s):  
Polyvinyl Chloride ◽  
Control Program ◽  
Extensive Study ◽  
Irrigation Canals ◽  
Quality Control Program ◽  
Southern Alberta ◽  
Canal Systems ◽  
The Government ◽  
Large Irrigation ◽  
Cover Material

In 1982, the Government of Alberta began a program to rehabilitate and expand existing irrigation headworks systems within southern Alberta. Particular emphasis was placed on effectively minimizing future seepage from these canal systems. To fulfill this requirement, Alberta Environment undertook an extensive study of methods of seepage control that would be most appropriate for use in this program. The study concluded that the installation of a complete canal buried membrane lining was one of the most effective methods for controlling seepage. The geomembrane material selected for use as the buried liner for this installation was 0.5 mm (20 mil) thick polyvinyl chloride (PVC). This paper presents the basis on which the complete canal buried membrane lining system was selected, the reasons for selecting the 0.5 mm (20 mil) thick PVC as the lining material, the quality control program for monitoring the purchasing of the PVC material, and the installation procedures used for placing the membrane within the canal cross section. The design criteria and construction procedures relevant to the earth cover material being placed on the membrane liner are also presented. Key words: irrigation, canals, seepage, lining, geomembrane, performance.

Microbiological water quality in a large irrigation system: El Valle del Yaqui, Sonora México

2011 ◽  
Vol 46 (14) ◽  
pp. 1708-1712 ◽  
Author(s):  
Pablo Gortáres-Moroyoqui ◽  
L. Castro-Espinoza ◽  
Jaime E. Naranjo ◽  
Martin M. Karpiscak ◽  
Robert J. Freitas ◽  
...  
Keyword(s):  
Water Quality ◽  
Irrigation System ◽  
Microbiological Water Quality ◽  
Large Irrigation
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