Luqmon
@staff.tiiame.uz
Hydraulics and Hydroinformatics
National Research University "Tashkent Institute of Irrigation and Agricultural Mechanization Engineers" Tashkent 100000, Uzbekistan
RESEARCH INTERESTS
Hydraulics, Hydrology, Ecological issue, Sedimentation issue, hydrological changes in Reservoirs, Climate change
Scopus Publications
Scopus Publications
Aybek Arifjanov, Luqmon Samiev, Dilbar Abduraimova, and Khumora Jalilova
EDP Sciences
In the context of global climate change and increasing demand for natural resources, sustainable development requires the introduction of innovative technologies that contribute to the conservation and rational use of water resources. This article aims to examine water-saving irrigation technologies. The efficiency of the sprinkler irrigation system is affected by the wind flow and evaporation. Therefore, the comparison of designed and measured values of discharge from a nozzle and throwing radius of three sprinklers for 6 pressured head were done. Experiment was conducted at Uchxoz district, Tashkent region, Uzbekistan with latitude 69.248903 and longitude 41.037240. The place is 2 ha and experiment were at wheat crop. Irrigation system has been taken from Chirchik river. Sprinkler system installed with 9 to 12 m distances connect with a soil condition and slope. Because of importance of natural conditions, especially wind drift and radiation connect with the evaporation, research was performed at these losses. Furthermore, the calculation of wind drift and evaporation losses based on the observed values was calculated. The measured values of the discharges were lower as the designed one in all cases from 71% to 83%. Furthermore, we can conclude that the smallest differences were observed during the experiment with highest radius with smallest pressure head. The real radius of wetter area was from 80% to 88% of the designed radius by producer. The results showed the need to use the higher number of sprinklers or higher pressure to irrigate the required area.
Aybek Arifjanov, Luqmon Samiev, and Sirojiddin Jalilov
EDP Sciences
Water scarcity is becoming an increasingly acute problem around the world, especially in the field of agriculture. Different kinds of irrigation system, e.g., drip irrigation, are developed and actively introduced to save water resources in arid regions. The study aims to review articles devoted to the implementation of drip irrigation systems in Central Asia countries. The array of the studies was retrieved from Scopus database for the 17-year period between 2007 and 2023 and totalled 32 articles. For the purpose of the study, all publications were categorized in several groups. Publications in scholarly journals were listed by publication numbers and citations. Relevant articles concentrated on drip irrigation in Uzbekistan and Kazakhstan. To specify the regions the articles originated from, two maps were drawn: the first one is for Kazakhstan with regions and the second one for Uzbekistan. All the publications were reviewed by their methodology and received some feedbacks. The article researched regions of Kazakhstan and Uzbekistan and gave recommendations on the implementation of drip irrigation systems in regions of the two countries.
Bokhir Alikhanov, Bakhtiyor Pulatov, and Luqmon Samiev
Universitas Muhammadiyah Surakarta
This comprehensive study investigates land use and land cover (LULC) changes in Ugam Chatkal Na-tional Park, Uzbekistan, over a 30-year period from 1993 to 2022 with Landsat satellite images. Utili-zing advanced CA-Markov and Random Forest machine learning algorithms, it meticulously analyzes historical data to understand past trends and projects future LULC changes. According to remote sen-sing analysis of the past, our findings show the sharp decline of glacier land cover from 2105 km2 to 1334 km2 in the Ugam Chatkal National Park, replaced by tree cover (from 327 km2 in 1993 to 450 km2 in 2022), rangelands (1259 km2 in 1993 to 1355 km2 in 2020), and rocks (from 834 km2 in 1993 to 1390 km2 in 2022). Agriculture, water and bare land witnessed some fluctuations but did not change significantly. At the same time, the region experienced some urbanization, raising the urban area from 50 km2 in 1993 to 90 km2 after 29 years. The article suggests three possible scenarios for the future of the region: “hard”, “soft” and “bad” scenarios. Land cover change predictions are done in TerrSet software with the CA-Markov model for four decades: 2035, 2045,2055 and 2065. Hard and soft sce-narios predict similar patterns for the future: a decline in glacier cover and a rise of tree cover, rock and rangelands, with a slight increase in agriculture and urban classes. Whereas “bad” scenario, which incorporates rapid urbanization and agricultural expansion for the study area, forecasts a climb of the urban area until 415 km2 (8% of the territory) until 2065, and 286 km2 for agriculture.
Aybek Arifjanov, Luqmon Samiyev, Farrukh Babajanov, Suhrob Tadjiboyev, and Jamoliddin Akramov
EDP Sciences
the fractional and chemical composition of the river sediments in the "Sokhsoy" stream and in the " Ong gyorq" reservoir were studied and the possibilities of their use were analyzed. In the study of this process, the fractional and chemical composition of fluids moving along with water in the clarifier and the change of their share in water along the length of the clarifier were considered as the main factors. Particles with a diameter of 1.0 - 0.05 mm and 0.05 - 0.001 mm make up the main part of the fractional composition of suspended solids in the clarifier , and their average total share is 56% of 1.0 - 0.05 mm particles at the inlet of the clarifier, and 56% at the outlet It was determined that 29%, 0.05 - 0.001 mm particles make up 43% in the inlet and 70% in the outlet. It was studied that the chemical composition of the river discharges has a special feature, and that the crop fields are rich in sources of nutrients necessary for plant development. Based on the obtained results, conclusions are given on the possibility of regulating the amount of chemical compounds by controlling the distribution of river discharge in the clarifier.
Luqmon Samiev, Umida Vokhidova, Elza Tursunova, Tursinoy Apakhodjaeva, Farrukh Babajanov, and Samandar Shaymardonov
EDP Sciences
The theory of river flow transport is the major cause in the development of the irrigation sector and largely determines the stability of the irrigation scheme. Crop water requirements vary due to climate and crop growth stages. For this reason, the flow of sediments changes during the irrigation season. In this article, in order to evaluate the carrying capacity of the canals, researches in natural field conditions were carried out in the Amu-zang canal belonging to the “Amu-Surkhan Irrigation Systems” basin administration. Flow transportability in natural channels was calculated for particles with d=0.05 mm by S.Kh.Abalyans, A.Zamarin, A.M.Arifzhanov and Engelund and Hansen methods. A histogram of the dependence of flow capacity, channel depth and average speed on the Amuzang channel was obtained, according to which it was determined that the flow capacity is 1.5-1.8 kg/m3 in the range of 0.6-0.8 m/s.
Bokhir Alikhanov, Bakhtiyor Pulatov, and Luqmon Samiev
Universitas Muhammadiyah Surakarta
This paper presents a comprehensive study relating to the vegetation cover change in Ugam Chatkal National Park (Uzbekistan) and its relation to climate change during the post-Soviet period (1991-2022). The study utilises remote sensing technology, specifically the Normalised Difference Vegetation Index (NDVI) and the Soil-Adjusted Vegetation Index (SAVI), to monitor spatio-temporal changes in vegetation. Landsat satellite imagery and meteorological data, including temperature and precipitation records form the basis of the analysis. The research aims to understand the impact of climatic factors, such as air temperature, soil temperature and precipitation on vegetation cover. Statistical methods, for example Pearson’s correlation analysis are employed to determine the strength and direction of relationships between these variables. The study reveals that both NDVI and SAVI are strongly correlated with air and soil temperatures, indicating the significant influence of these climatic factors on vegetation health and growth. The findings suggest that changes in vegetation cover in the Ugam Chatkal National Park are closely tied to climate change, with air temperature revealing a substantial correlation with time, indicating a trend towards increasing temperatures. The study also forecasts future climatic and vegetation trends, predicting an increase in air temperature, precipitation and vegetation cover over the next four decades. In particular, the research highlights the magnitude of monitoring and understanding the complex interactions between climate change and vegetation dynamics, which are crucial for environmental management and policy-making in the region.
L N Samiev, Q Ch Ulashov, A Sh Suyunov, D N Mamatova, and Sh Sh Xusanov
IOP Publishing
Abstract This paper addresses the pressing issues of climate change, population growth, and the imperative for efficient water resource management. It emphasizes the importance of effectively utilizing water stored in reservoirs and accurately assessing water loss. Specifically, the study focuses on quantifying water lost through the filtration process in earthen dam bodies and examining its impact on structural integrity. Measurements were taken at the Chimkurgan reservoir when it reached the upper water level mark (Δ 480.43), assessing the filtration depression curve and the flow rate of water exiting from hydroposts at each piezometer within the dam. Statistical analysis of data collected during field research indicated an average loss of 90 liters per second through filtration from both the body and floor of the dam over a year. This article explores the relationship between filtration water consumption, the depression curve, and the geological characteristics of the dam, providing insights into effective water management strategies.
Luqmon Samiev, Qudratilla Ulashov, Mushtariybonu Gaffarova, Dilmurod Ruziev, and Umida Voxidova
EDP Sciences
During the review of the effect of evaporation on the change of the hydrological regime of water reservoirs, an analysis was carried out on how global climate change will lead to a change in the water reservoir regime. Taking into account the sudden increase in air temperature and the effect of wind, the evaporation process in the month of June (June) was studied simultaneously during the years 2018 and 2022. During the research period, the effect of evaporation on the change of the hydrological regime of the water reservoir was determined by empirical formulas proposed by scientists such as B. D. Zaykov, A. Z. Braslavsky and P. A. Vikulina, and it was observed that the evaporation process is increasing year by year. According to accurate calculation books, the evaporation in June 2018 at the same time E0=86.14 mm, Ev=108.16 mm, in June 2022 this figure is E0=121.27 mm, Ev=166.35 mm was found to be organizing. According to the analysis, we can see that the evaporation process in the reservoirs is increasing year by year, which causes a change in the hydrological regime of the reservoirs. The evaporation process is mainly caused by the increase in air temperature, the influence of the wind, and the fact that the surface of the reservoir is at its maximum level in May and June.
Luqmon Samiev, Samandar Shaymardanov, Sardor Xoshimov, and Olimjon Mamadiyorov
EDP Sciences
The rate of deposition of sediments in the water flow has a great influence on the flow carrying capacity, service life and coefficient of useful work of natural channels. In addition, precipitation and land use change lead to the acceleration of the erosion process and directly affects the rate of sedimentation of the umbilical cord. In this literature, attention was paid to studies analyzing the factors influencing the volume of water storage in reservoirs and natural lakes. 14 studies found an increase in the rate of sediment deposition and 13 found a decrease. 83.3% of the articles studied studied natural lakes and found a recent increase in sedimentation, including 54.5% of the articles on impoundment reservoirs reported a recent increase in sedimentation. determined to decrease. Land use change has been cited as the main cause of the increase in sediments, and climate change has also had a significant impact. In 44% of the reviewed articles, it was found that reservoirs and canals are losing their water intake capacity as a result of the increase in sediments, resulting in siltation. In the following studies, it was found that as a result of increased sedimentation, the process of silting in canals and water storage structures increases significantly and they lose their capacity to carry water.
Akromxodja Ishanxodjayev, Maqsud Оtakhanov, Luqmon Samiev, Dilbar Abduraimova, and Sirojiddin Jalilov
EDP Sciences
It is known that water filtration devices are used to increase the efficiency of the drip irrigation system on a large scale. Currently, there are various types of filtering devices, the main purpose of which is to reduce the amount of turbidity in water. In Uzbekistan, vertical and horizontal filters made according to Turkish and Chinese technologies are used. When designing drip irrigation systems, it is necessary to perform a hydraulic calculation. At when performing a hydraulic calculation, it is necessary to calculate the pressure loss in the filtration system and base the pumping unit on this basis. This article presents the results of studies of a vertical filtration device manufactured using Turkish technology. The studies were carried out in natural field conditions, in a filtration system installed in the field of the farm of Ashurov Azizbek Ganievich, located in the Kasbi district of the Kashkadarya region. The filtration system consists of 4 parts and describes studies to determine the coefficient of resistance hydraulic calculation. The studies were conducted in 3 variants. It has been established that the magnitude of pressure losses in the filtration system varies from 2.7 m to 9m. It has been established that the resistance coefficient of the filtration system varies from 61.9 to 247.1 in option 1, from 32.1 to 229.5 in option 2 and from 32.5 to 218.5 in option 3. As a result of the research, a method was developed for determining the resistance coefficient required for the hydraulic calculation of this filter system. A formula for calculating the pressure loss in the filtration room is recommended system.
Aybek Arifjanov, Luqmon Samiyev, Sardor Xoshimov, Samandar Shaymardanov, and Suhrob Tadjiboyev
EDP Sciences
The theory of river flow transport is the major cause of the development of the irrigation sector and largely determines the stability of the irrigation scheme. Crop water requirements vary due to climate and crop growth stages. For this reason, the flow of sediments changes during the irrigation season. In this article, to evaluate the canals’ carrying capacity, research in natural field conditions was carried out in the Amuzang canal belonging to the “Amu-Surkhan Irrigation Systems” basin administration. Flow transportability in natural channels was calculated for particles with d=0.05 mm by S.Kh.Abalyans, A.Zamarin, A.M.Arifzhanov, and Engelund and Hansen methods. A histogram of the dependence of flow capacity, channel depth, and average speed on the Amuzang channel was obtained, according to which it was determined that the flow capacity is 1.5-1.8 kg/m3 in the range of 0.6-0.8 m/s.
Aybek Arifjanov, Samiyev Luqmon, Zaytuna Ibragimova, and Q. Ch. Ulashov
EDP Sciences
In this article, the Chimkurgan reservoir built in the Kashkadarya basin, located in the Qamashi district of the Kashkadarya region, is selected. Considering the change in the water level of the Chimkurgan reservoir, the level of erosion of the shores in the zone of 14 m of water level change on the left bank of the reservoir was considered. Over time, the forces induced by water weaken the soil aggregates, negatively affecting the soil's stability. The density composition of the reservoir coastal soils was determined at the specified heights. The degree of erosion of the reservoir’s banks, depending on the soil type, was also considered. To the bottom of the reservoir, the degree of erosion of coastal soils was determined in the water level change zone at heights of 9 m, 11 m, 13 m, 15 m, 17 m, and 19 m, 22 m, 23 m. It was found that the types of soils obtained from the elevations in the specified place differ from each other. It was determined that the type of soil at these heights is clay, soft soil, and sand, and to a certain extent, the erosion of the banks differs depending on the type of soil.
Lukmon Samiev, Abbos Khamidov, Akmal Ungalov, and Giyosiddin Mamatisaev
EDP Sciences
To correct this deficiency of nature, water reservoirs are built at existing water sources and water resources are managed (corrected). In order to fully and effectively use the water of rivers and streams and to prevent floods, it is necessary to correct the order of the river flow. This problem can be solved by building artificial water bodies - reservoirs. Each river is unique in terms of its source of saturation and hydrological regime. At the same time, depending on the type of management of water resources in the reservoir, and the plan for the use of collected water throughout the year, a separate plan is drawn up for each reservoir. Therefore, in studying the role of reservoirs in water resources management, attention should be paid to the characteristics of each water source and each reservoir. Water resources in our republic are extremely limited and unevenly distributed across the territory of our country. In order to correct this deficiency of nature, water reservoirs are built at existing water sources and water resources are managed. Today, geo-information systems offer their convenient capabilities in hydrological analysis. This work carried out hydrological analysis through geo-information systems. A river basin located on the base of the livestock reservoir was identified and the area was calculated. The area was found to be 392.5 km. The sequence of currents in the river basin and its total length were calculated, indicating 297.7 km. The flow density in the river basin was determined and divided into 5 categories, each category was given a separate color. The flow density was 0.76.
Ilkhom Ruziev, Lukmon Samiev, Durdona Mustafoyeva, Shavkat Nortaev, and Shohzod Yakhshiev
EDP Sciences
The task of GIS is to receive, collect, analyze, store and transmit data in any format. Being able to access any of these data formats and accessing the program will further enhance GIS capabilities. The ability of GIS to conduct various statistical analyzes, mapping and creation of various databases ensures that it is more relevant and popularized in the area of land and water conservation. Therefore, the task of GIS is to receive, collect, analyze, store and transmit data in any format. Being able to access any of these data formats and accessing a meal program will further enhance GIS capabilities. In Uzbekistan, especially in the Jizzakh province, the reclamation state of irrigated lands and soil salinization is inextricably linked with the level of groundwater, their salinity and movement. The level of groundwater and its salinity depends largely on the technical condition of the drainage networks and the amount of atmospheric precipitation, the supply of fresh water during the vegetation period, and the movement of groundwater from outside. Discussed future of using GIS in different sphere. GIS gives possibilities to collect the data, renewing it or use new information in analysis. It requires quick change of GIS information about Earth because procedures in the Earth are dynamically changeable. Periodically changing information in GIS gives us possibility to get new information and analyse it. GIS technologies and techniques started using widely in all sphere of humanity. It is important to know its properties.
Khusen Gafforov, Akmal Ungalov, Lukmon Samiev, Shakhnoza Baxronova, Nodir Olimjonov, and Bekhroz Bektashov
EDP Sciences
Global climate change is undoubtedly one of the main threats to the world community among existing environmental problems. This problem has a particularly severe impact on water resources. Changes in hydrological processes or flows in river basins directly or indirectly affect the dynamics of changes in gross domestic product (GDP) in this region. Chirchik basin provides about 16% of GDP of the republic, and more than 70% of water resources are used for irrigation of crops [1-5]. For this reason, any factors affecting hydrological processes and flow dynamics in the river basin, especially climate change, immediately affect all aspects of life in the region, including the social level of society and economic stability. Assessing the impact of climate differences on river basin flow dynamics is important for ensuring sustainable agricultural productivity for river basins in the future, as well as reducing the ecological and environmental impacts of climate change. This situation calls for urgent and concerted action in several areas: technology, infrastructure, politics, economy, ecology and environmental protection. The article assessed the impact of changes in precipitation intensity on stream dynamics based on the Global Circulation Model (GCM) coordination scenarios, RCP4.5 and RCP8.5 for the years 2030, 2050 and 2070 using the delta approach method. The results of the study provided strong evidence for changes in stream dynamics in the Chirchik basin for the near and far future.
Luqmon Samiev, Khumora Jalilova, Sirojiddin Jalilov, Jamila Xusanova, and Dilnoza Mamatova
EDP Sciences
This article shows the analysis of the parameters of a sprinkler irrigation system following different natural conditions (climate, soil, and hydrogeological) and their analysis in the implementation of the hydraulic calculation and design. According to the majority of literature, several calculations are made for the pressure and discharge during sprinkler irrigation. In the system under analysis, calculations are made on the irrigation processes of pipes and their outflow. It uses Google Earth and AutoCAD. In the hydraulic calculation of the system parameters, it was determined that the area's natural conditions are important and that changes and additions should be made to the calculations.
Luqmon Samiev, Holmurod Qurbanov, Jamila Xusanova, Dilnoza Mamatova, Sirojiddin Djalilov, and Khumora Jalilova
EDP Sciences
It is known that water in nature has the property of self-purification. But by our century, the level of water pollution exceeded the norm. As a result, water could not completely eliminate the contaminants contained in its composition. This also defines the problem of solving on self-purification of water. There are various ways to control the quality of water, from which it is possible to list the following: reduce the number of dissolved salts contained in the water or dilute the water, reduce the hardness of the water, reduce the amount of iron contained in it, reduce the number of floating substances hanging in the water, etc. Therefore, in this proposed method, salt underground water sources are used, and the problems of water for use in rural areas, farms, and similar enterprises have been solved. The degree of desalination depends on the content of water. Magnesium cation water is sufficient to separate the gypsum compounds, which are found to be unfavorable for this method. This requires a method and technology that will distinguish only these salts from water. In this article, the process of adding irrigation water to groundwater, treating it, and reusing it for irrigation has been implemented. An experiment was conducted using Faraday's law. The experiment was mainly to remove unwanted salt content from the water through plates and check the quality of the water. As a result, the excess amount of salt in the water was removed, and it was reused and used for irrigation.
Leyla Sharafutdinova, Gofur Jalilov, Isomiddin Togaev, Luqmon Samiev, K T Rakhimov, and T Apakhodjaeva
IOP Publishing
Abstract The article discusses the lithological and petrographic properties of pre-Jurassic sedimentary rocks under the influence of the Barsakelmes pipe and the drilling of wells in the adjacent territories. The results of substantiating their age are also presented. In the section of pre-Jurassic deposits, 8 lithostratigraphic complexes have been identified.
Tuychi Shoymurotov, Isomiddin Togaev, Shamshodbek Akmalov, Luqmon Samiev, Maqsud Otakhonov, and Tursinoy Apakhodjaeva
AIP Publishing
A. Arifjanov, Sh. Juraev, T. Kosimov, Sh. Khaidarov, and J. Nodirov
AIP Publishing
Aybek Arifjanov, Luqmon Samiev, Sherzod Khaydarov, Toxirjon Kasimov, and Sherali Juraev
AIP Publishing
Isomiddin Togaev, Anvarbek Nurkhodjaev, Shamshodbek Akmalov, Luqmon Samiev, Maqsud Otakhonov, and Dinislom Atakulov
AIP Publishing
A Arifjanov, T Kaletova, D Abduraimova, L Samiev, and X Jalilova
IOP Publishing
Abstract The article describes the methods of conducting some field studies to evaluate the effectiveness of sprinkler irrigation systems and to design them reliably. Also, the distribution of discharge in the irrigation system across the territory and its losses are analysed. Christiansen’s coefficient of similarity “CU” is used to estimate sprinkler water distribution. It is carried out by studying three types of combinations according to the Catch Can method: sprinkler height, sprinkler discharge and pressure changes. In order to determine the Christiansen coefficient, it is calculated using the sum of experiments in taking into account the distribution of discharge according to the height of the sprinkler at several different pressures. Based on the method given above, the optimal height was determined in the assessment of water distribution. Based on field experiments and their analysis, a graph was created based on sprinkler height and flow distribution for discharge.
Aybek Arifjanov, Luqmon N. Samiev, Zokhidjon Abdulkhaev, Dilbar Abduraimova, Shodiyor Yusupov, and Tatiana Kaletová
Central Library of the Slovak Academy of Sciences