The scientific-technical journal 'Digital Technologies in Industry' specializes in publishing the latest research articles on the introduction of new technologies in the industrial sector, their practical applications, and innovative approaches. Our journal focuses on scientific research and technical studies in the fields of industrial process automation, artificial intelligence, digital control systems, and other advanced technologies. Our journal provides a platform for experts, scientists, and practitioners to share knowledge and experience on the successful implementation of modern technologies in industry. The scientific-technical journal "Digital Technologies in Industry" (e-ISSN: 3030-3214) is recommended, based on Resolution No. 358 of the Higher Attestation Commission under the Ministry of Higher Education, Science, and Innovation of the Republic of Uzbekistan dated July 30, 2024, for publishing the main scientific results of dissertations in the following specializations for candidates for the academic degrees of Doctor of Philosophy (PhD) and Doctor of Science (DSc) in technical sciences: ✅05.00.00 - Technical Sciences ✅04.00.00 - Geological and Mineralogical Sciences ✅02.00.00 - Chemical Sciences (E)ISSN: 3030-3214 DOI: 10.70769/3030-3214.SRT
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GEOLOGICAL-SEARCH CRITERIA FOR OIL AND GAS IN THE JURASSIC TERRIGENOUS DEPOSITS OF THE UMID FIELD OF THE CHARJOY STAGE
This article assesses the oil and gas potential of the Lower and Middle Jurassic terrigenous deposits of the Dengizkul uplift in the Bukhara-Khiva region based on geological-geophysical, lithofacies, and hydrodynamic criteria. The study investigates the lithological-stratigraphic characteristics of the terrigenous formation, depositional facies conditions, distribution of reservoir thicknesses, and the spatial occurrence of productive horizons. Zones of channel sandstone development with favorable reservoir properties were identified, and prospective horizons associated with anticlinal and lens-shaped traps were delineated. In addition, hydrodynamic anomalies favorable for the formation and preservation of hydrocarbon accumulations were recognized.
04.00.00 - Geology and Mineralogy Sciences
Copyright (c) 2026 Shoymurotov, T.X., Tog‘ayev, I.S., Alimov, M.M., Toshtemirov, S.A. (Muallif) https://creativecommons.org/licenses/by/4.0
IMPROVEMENT OF FOAM-GENERATING STICK TECHNOLOGY FOR REDUCING LIQUID LOADING IN GAS WELLS
Liquid loading is a common problem in gas wells at the late stage of reservoir development, significantly reducing production efficiency. This study presents an improved foam stick technology aimed at reducing liquid density and enhancing lifting efficiency. The methodology includes theoretical analysis, laboratory experiments, and field testing. The results show a reduction in liquid density by 35–45% and an increase in well productivity by 18–27%. The proposed technology is economically viable and effective for gas well deliquification.
Copyright (c) 2026 Rustamov, M.M. (Muallif) https://creativecommons.org/licenses/by/4.0
A METHODOLOGICAL APPROACH TO STUDYING NEOTECTONIC STRUCTURE AND MOVEMENT OF REGIONS BASED ON A HIERARCHICAL TECTODYNAMIC MODEL
This study is devoted to the investigation of the formation and development patterns of neotectonic processes in the Central Eurasian region. A comprehensive analysis of deformation processes was carried out based on the integration of geodynamic, geodetic, and tectonophysical data. Using GPS observations, surface velocity fields were determined, and deformation rates along with their gradients were evaluated. The study applies a hierarchical tectodynamic model, allowing neotectonic processes to be analyzed as a unified system at global, regional, and local scales. The results indicate that deformation is not limited to plate boundaries but also extends into their interiors, with particularly high intensity observed in the Himalaya–Tibet and Zagros regions. Seismic data analysis revealed a strong correlation between earthquake distribution and deformation zones. The findings contribute significantly to the advancement of geodynamic modeling and provide a systematic framework for studying neotectonic processes.
Copyright (c) 2026 Dononov, J.U., Shamsidinova, G.U. (Muallif) https://creativecommons.org/licenses/by/4.0
SPATIAL AND DEPTH DISTRIBUTION CHARACTERISTICS OF GEOLOGICAL FAULTS
This study investigates the spatial and depth distribution characteristics of geological faults using fractal and statistical analysis methods. A random point distribution model and the Lévy flight fractal model were employed to simulate the spatial arrangement of fault systems. Based on the Lévy flight model, the probability density and distribution functions of inter-fault distances were determined, and the fractal dimension parameter was calculated. The results confirmed that the spatial distribution of geological faults and earthquake epicenters represents a complex structural-geodynamic system exhibiting self-similar fractal properties. A strong relationship was identified between the degree of fault clustering, spatial density, depth distribution, tectonic stress fields, and seismic activity. The influence of systematic factors, including coordinate errors, boundary effects, statistical sample size, and spatial projection, was analyzed during the estimation of the correlation dimension. It was demonstrated that reduced coordinate accuracy at small scales may lead to inaccurate estimation of fractal parameters. The application of statistical filtering and scale-parameter optimization methods improved the accuracy of distribution pattern assessment. The obtained results are of significant scientific and practical importance for identifying seismic hazard zones and evaluating the geodynamic state of regions.
Copyright (c) 2026 Dononov, J.U. (Muallif) https://creativecommons.org/licenses/by/4.0
INVESTIGATION OF THE THERMOPHYSICAL AND FIRE-RESISTANT PROPERTIES OF EPOXY POLYMER COMPOSITE COATINGS BASED ON BINARY FILLERS
This article investigates the thermophysical, thermomechanical, and fire-resistant properties of epoxy polymer composite coatings modified with binary fillers, mineral components, and intumescent flame-retardant additives. A heat-protective composite coating based on VEP-3 epoxy resin was selected as the research object. The thermal stability of the material was evaluated using differential thermogravimetric analysis, mass-loss kinetics, thermomechanical deformation, oxygen index, and smoke generation coefficient. The results showed that the VEP-3 sample exhibited an endothermic effect at 283.57 °C, while the total mass loss within the temperature range of 21.07–801 °C reached 48.285%. The optimal incorporation of flame retardants, vermiculite, carbon nanotubes, and intumescent additives increased the oxygen index from 17–19% to 35–38% and significantly reduced smoke generation. The obtained results confirm the potential of intumescent epoxy composite coatings as effective thermal and fire-protective materials.
Copyright (c) 2026 Rahmanqulov, A.A., Maxmanov, E.B., Xaydarov, T.Z., Ro‘ziyev, R.T. (Muallif) https://creativecommons.org/licenses/by/4.0
STRUCTURAL AND LITHO-STRATIGRAPHIC FEATURES OF THE JURASSIC CARBONATE FORMATION OF THE BOYSUN FLEX
This article analyzes in detail the geological structure of the Surkhandarya megasyncline and the features of Jurassic carbonate formations using the Boysun flexure as an example. The study provides information on the lithostratigraphic subdivision of the area, the tectonic structure, and prospective areas rich in oil and gas reserves, in particular the Gadjak field. It scientifically substantiates the relationship between subsalt layers and the rocks located above and below them. The article also presents descriptions of six separate formations belonging to the Jurassic period and comparative data on their thickness. Based on geophysical and drilling results, the possibilities for the formation of reef structures and hydrocarbon traps in the region are assessed.
Copyright (c) 2026 Alimov, M.M., Djalilov, G.G., Tog‘ayev, I.S. (Muallif) https://creativecommons.org/licenses/by/4.0
DEVELOPMENT OF THE POST-COLLISIONAL STAGE OF FOLD BELTS AND THE ORIGIN OF POST-COLLISIONAL GRANITOIDS
This article examines the evolution of fold belts during the post-collisional stage and the mechanisms responsible for the formation of post-collisional granitoids. Within the framework of the Wilson cycle, geodynamic processes following continental collision, including lithospheric delamination, gravitational collapse, rifting, and transcurrent faulting, are analyzed. The compositional characteristics, source regions, and geodynamic models of post-collisional magmatism and granitoid formation are also summarized.
Copyright (c) 2026 Axmedov, X.R., Abdusalomova, M.M. (Muallif) https://creativecommons.org/licenses/by/4.0
DEVELOPMENT OF A METHOD FOR CONTROLLING THE EVOLVENT TEETH PROFILE OF CYLINDRICAL WHEELS BASED ON MACHINE VIEW TECHNOLOGIES
A new method for controlling the involute profile of cylindrical gears based on machine vision technologies and three-dimensional geometric data processing is presented. The relevance of the study is explained by the need to resolve the contradiction between high accuracy, speed, and cost of measurements in existing approaches (coordinate measuring machines, optical, and comparative methods). The aim of the study is to develop a convenient, sufficiently accurate, and automated control method that does not require specialized gear measuring equipment or reference CAD models.
Mining, Metallurgy, and Manufacturing Industry
Copyright (c) 2026 Jo‘rayev, N.N., Ataullayev, A.O., Egamberdiev, I.P., Yaxshiyev, S.N. (Muallif) https://creativecommons.org/licenses/by/4.0
ANALYTICAL REVIEW OF SCIENTIFIC RESEARCH ON IMPROVING THE EFFICIENCY OF THE LINTERING PROCESS AND JUSTIFICATION OF THE RESEARCH DIRECTION
This article presents an analytical review of scientific research aimed at improving the efficiency of the lintering process. The advantages and disadvantages of existing linter designs were analyzed. The study revealed that the seed agitator design in the working chamber significantly affects process efficiency, and its improvement was substantiated as the main direction for further research.
Copyright (c) 2026 Nazirov, R.R., Karimov, M.R., Abduqahorov, N.O., Muxammadiyev, U.S. (Muallif) https://creativecommons.org/licenses/by/4.0
THERMOMECHANICAL ANALYSIS OF A ROTATING AXIS HOUSING TAKING INTO ACCOUNT THERMAL LOADS AND STRUCTURAL DEFORMATIONS IN A FIVE-AXIS CNC SYSTEM
This article presents a numerical study of the thermomechanical state of the rotary unit of a five-axis CNC machine. Using the finite element method, a coupled analysis of thermal fields and the resulting housing deformations was performed. Zones of maximum heating and their influence on the magnitude of spatial displacements were identified. The obtained results allow us to estimate the contribution of thermal factors to the positional error of the rotary axis.
Copyright (c) 2026 Ataullayev, A.O., Jo‘rayev, N.N., Egamberdiyev, I.P., Yaxshiyev, S.N. (Muallif) https://creativecommons.org/licenses/by/4.0
SUBSTANTIATION OF OPTIMAL BLAST HOLE PARAMETERS TO ENHANCE THE FRAGMENTATION EFFICIENCY OF HARD ROCK MASSES AT THE YOSHLIK-I DEPOSIT
The paper addresses the selection of drilling-and-blasting parameters aimed at improving rock fragmentation in the Yoshlik-I open pit. The objective was to determine rational values of bench height, burden, spacing, stemming, subdrilling, and delay timing by considering their combined influence on blasting efficiency and downstream mining operations. For a 15 m bench, the relationships B=k·H, S=1.2B and J=0.25B were used as the analytical basis. The calculations showed that the recommended parameters are burden 4.5 m, spacing 5.4 m, subdrilling 1.1 m, stemming 3.0-3.5 m, and an operationally effective delay of 20 ms. For water-filled blastholes, emulsion explosives and a 5-10% increase in charge density were found to be reasonable. The proposed parameter set reduces the share of oversized fragments from 35% to 15-18% and lowers specific explosive consumption from 0.90 to 0.75-0.80 kg/m³, thereby improving loading, hauling and overall production stability. The results can be used as a practical basis for differential blast design in deep open pits.
Copyright (c) 2026 Alimov, S.M., Normurodov, J.J. (Muallif) https://creativecommons.org/licenses/by/4.0
SYNTHESIS AND STUDY OF THE PROPERTIES OF GEOMEMBRANES BASED ON RECYCLED POLYETHYLENE FILLED WITH SHEROBOD ARGILLITE MINERAL
This article investigates the recycling of end-of-life low-density polyethylene film waste, widely used in agriculture, and explores methods for modifying its properties with local minerals. The main objective of the research is to synthesize high-strength nanocomposite geomembranes by incorporating argillite from the Sherabad deposit as a nanofiller into recycled low-density polyethylene. The study analyzes the mechanisms by which nanodispersed argillite particles restore the physicochemical properties of the secondary polymer, which has been degraded by solar radiation and moisture. Experimental results show that when the mass fraction of argillite is between 5% and 10%, the material's tensile strength and heat resistance improve significantly. The resulting nanocomposite geomembranes can serve as an import-substituting, ecologically safe, and cost-effective insulation material for hydraulic structures and reservoirs in saline soil conditions.
Copyright (c) 2026 Furkat Eshkurbonov, Davronova Munisa Nurali qizi (Muallif); Ashurova Asal Abduolim qizi (Tarjimon); Abdullayeva Rayxona Ilhom qizi (Muallif) https://creativecommons.org/licenses/by/4.0
ENHANCEMENT OF INTAKE AIR FILTRATION EFFICIENCY FOR INTERNAL COMBUSTION ENGINES OF MINING EQUIPMENT
Under open-pit mining conditions, internal combustion engines operate in environments with a high concentration of abrasive dust, which leads to intensive wear of the cylinder–piston group, power reduction, increased fuel consumption, and a decrease in engine service life. This paper presents a comprehensive analysis of the influence of the particle size distribution and concentration of dust in the intake air on the tribological condition of key engine components, the parameters of the oil film, and the operational performance of the power unit. It is shown that particles with sizes of 5–20 μm pose the greatest risk, causing accelerated abrasive wear and deterioration of combustion chamber sealing. Based on theoretical considerations and operational data, the necessity of improving the efficiency of intake air purification is substantiated. A design of a multi-stage combined air filtration system is developed and proposed, including multicyclone pre-cleaning, two-stage electrostatic separation, and final purification using a conventional filter element. The proposed system ensures effective capture of particles within a wide size range (0.1–20 μm) under low aerodynamic resistance and increases the overall filtration efficiency up to 95%. The implementation of the developed system makes it possible to reduce the wear rate of the cylinder–piston group, extend the service life of both the base filter and the engine as a whole, decrease specific fuel consumption, and improve the operational reliability of mining machines under high-dust conditions.
Copyright (c) 2026 Kayumov, U.E., Xatamova, D.N., Pardayeva, S.S. (Muallif) https://creativecommons.org/licenses/by/4.0
INCREASING THE EFFICIENCY OF SORPTION CYANIDATION OF REFRACTORY SILVER-CONTAINING ORES USING VARIOUS REAGENTS FOR PRE-TREATMENT
The present study investigates the effect of preliminary reagent treatment on the efficiency of sorption cyanidation of calcines obtained from Hydrometallurgical Plant No. 3 after the oxidative roasting process. Nitric acid, hydrochloric acid, and sodium hydroxide were used as reagents for the preliminary treatment. The results demonstrate that nitric acid provides the most pronounced positive effect. Sorption cyanidation tests revealed that preliminary nitric acid treatment at a concentration of 20 g/l and a temperature of 85 °C increases the silver recovery from 53.7% to 85.1%. As a result, the overall silver recovery during the sorption cyanidation process increases by 31.4%, confirming the high efficiency of nitric acid pretreatment for enhancing the processing of refractory silver-bearing calcines.
Copyright (c) 2026 Xujakulov, N.B., Nasirova, N.R., Ibotov, B.O., Safarov, A.N. (Muallif) https://creativecommons.org/licenses/by/4.0
THE ROLE OF CHEMICAL CAPSULES USED IN ROCK BOLT SUPPORT OF MINE WORKINGS
This article analyzes modern development trends in rock bolt support systems for mine workings, with particular emphasis on the role and significance of chemical capsules. The study highlights structural solutions of rock bolting technologies, their application efficiency, and adaptability to various mining and geological conditions. The advantages of support methods using synthetic resins, phosphogypsum, and slag-cement binders are examined. In addition, the two-component system of chemical capsules, their operating mechanism, and the polymerization process are analyzed. Special attention is given to reducing negative impacts on workers’ health and the environment through optimization of chemical composition. The obtained results contribute to the improvement of rock bolt support systems and enhancement of their environmental safety.
Copyright (c) 2026 Nurxonov, X.A., Bo‘riyev, F.M., Ravshanov, A.A., Bakirov, G.X. (Muallif) https://creativecommons.org/licenses/by/4.0
INVESTIGATION OF THE TECHNOLOGICAL EFFICIENCY OF SBSH-250 MNA-32 DRILLING RIGS USED AT THE “YOSHLIK I” DEPOSIT AND THE PHYSICO-MECHANICAL IMPACT OF THE ROCK MASS
This article investigates the technical and technological capabilities of the SBSh-250 MNA-32 drilling rigs used at the “Yoshlik I” deposit, as well as the influence of the physico-mechanical properties of the rock mass on the drilling process. The study analyzes the relationship between the rock hardness coefficient, compressive and shear strength, and drilling speed. Based on the Protodyakonov scale, the drillability category of the rocks was determined, and the optimal operating modes of the SBSh-250 MNA-32 drilling rig were substantiated. The research results contribute to improving drilling efficiency and reducing energy consumption.
Copyright (c) 2026 Xasanov, A.A., Eshankulova, K.A., Ergashev, R.A., Norbekov, I.G. (Muallif) https://creativecommons.org/licenses/by/4.0
DEVELOPMENT AND INVESTIGATION OF THE PROPERTIES OF LOW-TEMPERATURE FUSIBLE ENAMEL COMPOSITIONS BASED ON THE “KHIVA QUARTZ SAND – SULTAN UVAYS FELDSPAR – LEAD-CONTAINING WASTE” SYSTEM
This article presents the results of research on the development of low-temperature fusible glass enamel compositions based on Khiva quartz sand, Sultan Uvays feldspar, and lead-containing industrial waste, as well as the investigation of their physicochemical and technological properties. Based on experimental studies, GEF-1, GEF-2, and GEF-3 compositions were developed, and their coefficient of linear thermal expansion, spreading ability, adhesion strength, density, and softening temperature were determined. The results showed that the GEF-3 composition fully complies with the requirements of GOST 24405-80.
Copyright (c) 2026 Buranova, D.B. (Muallif) https://creativecommons.org/licenses/by/4.0
THEORETICAL FOUNDATIONS AND PRACTICAL APPROACHES TO INDUSTRIAL WASTEWATER TREATMENT BASED ON THE COAGULATION PROCESS
This article examines the scientific foundations and advanced technological approaches to the coagulation–flocculation process widely used in the treatment of industrial wastewater. Coagulation is considered an effective physicochemical method that enables the destabilization of colloidal and finely dispersed particles, followed by their aggregation into larger flocs and subsequent sedimentation. The study provides a comparative analysis of various types of coagulants (metal-based and non-metal-based), their properties, and application efficiency based on existing scientific sources. Additionally, the main factors affecting process efficiency, including pH conditions, coagulant dosage, temperature, mixing conditions, and characteristics of colloidal systems, are systematically analyzed. Based on the physicochemical parameters of different industrial wastewaters, the applicability of the coagulation process is evaluated. The obtained results serve as a scientific basis for improving water treatment technologies, determining optimal operating conditions, and developing effective technological solutions.
Ecology, Labor Protection, and Industrial Safety
Copyright (c) 2026 Ikromov, A.A., Urinov, U.K., Fayziyev, J.B. (Muallif) https://creativecommons.org/licenses/by/4.0
EXPERIMENTAL ASSESSMENT OF THE SENSITIVITY OF THE SMART CHANNEL DEVICE AND THE MINIMUM WATER DISCHARGE
In this study, the sensitivity and minimum water discharge of the “Smart Channel” device, designed for measuring flow in open channels, were experimentally evaluated. The relevance of the research is justified by the need for rational water resource management in irrigation systems, accurate water accounting, and reliable detection of low discharges. The experiments were conducted in the “Hydraulics and Hydrometry” laboratory of “Smart Solution System” LLC, located in the Kuyichirchik district of the Tashkent region. A 60×60 sm prototype of the “Smart Channel” device was selected as the research object. The operating principle of the device is based on the velocity–area method, where discharge is determined using the average flow velocity and the cross-sectional area. The experimental results showed that for the 60×60 sm “Smart Channel” device, the average sensitivity threshold is 0.45 sm/s, while the minimum recorded discharge is 0.269 L/s. The measurement accuracy of the device was evaluated by comparison with a reference electromagnetic flow meter and the volumetric method. According to the results, the error of the “Smart Channel” device ranged from +2.47% to -2.48% relative to the reference flow meter, and from +2.43% to -2.47% relative to the volumetric method. The obtained results confirm that the “Smart Channel” device can be effectively applied for measuring low discharges and maintaining water accounting in open channels. The findings provide a scientific basis for determining the minimum measurable discharge, defining the sensitivity threshold, and improving calibration methodologies.
Copyright (c) 2026 Otаxonov, M.Y., Zokirov, I.B., Toshtemirov, Sh.A., Nazarov, U.X. (Muallif) https://creativecommons.org/licenses/by/4.0
EVALUATION OF COMPOSITIONAL STRUCTURAL CHANGES IN TERPOLYMERIZATION OF A TERNARY SYSTEM BASED ON EXPERIMENTAL DATA AND KINETIC MODELING
This study investigates the kinetics of terpolymerization and structural changes in the TDMA–styrene–maleic anhydride system based on experimental data and kinetic modeling. Increasing the initiator concentration from 16.8×10⁻⁶ to 51.3×10⁻⁶ mol·L⁻¹ led to an increase in conversion from 6.4% to 15.2% and reaction rate from 4.075×10⁻⁶ to 8.965×10⁻⁶ mol·L⁻¹·s⁻¹. It was found that increasing styrene content enhances the reaction rate from 3.11×10⁻⁶ to 11.07×10⁻⁶ mol·L⁻¹·s⁻¹. At low conversion, the composition remains close to the initial feed; however, compositional drift is observed in some systems (MA fraction increases from 0.50 to 0.70). The experimental results show good agreement with the model (±0.02–0.04).
Copyright (c) 2026 Mavlonov, Sh.B., Fozilov, S.F. (Muallif) https://creativecommons.org/licenses/by/4.0
THE IMPORTANCE OF AEROSPACE MAPPING METHODS IN OIL AND GAS FIELD EXPLORATION
This article presents a comprehensive and systematic analysis of the lithological composition, bedding characteristics, and facies variability of Devonian deposits widely distributed in the Quljuqtov Mountains. Particular attention is paid to the mineralogical and petrographic composition of terrigenous, carbonate, and volcanogenic rocks, as well as to their structural–matrix features and stratigraphic position. Rhythmic alternation of layers, facies zonation, and the characteristics of organogenic rock formation within the Devonian deposits are interpreted in close connection with the paleogeographic conditions of sedimentation. The obtained data indicate that during the Devonian period shallow-marine, deltaic, and reef-platform environments successively predominated in the study area. In addition, the relationship between sediment accumulation processes and tectonic activity and volcanism is substantiated on a scientific basis. The results of the study contribute to the reconstruction of the geological evolution of the Devonian complex of the Quljuqtov Mountains, the determination of its position within the stratigraphic framework, and a deeper understanding of the stages of paleogeographic development of the region. The conclusions of the research are of significant scientific importance for regional geology, stratigraphy, and paleogeography.
Copyright (c) 2026 Berdimuratova, G.P., Kurbonova, M.M. (Muallif) https://creativecommons.org/licenses/by/4.0
GEOLOGICAL STRUCTURE AND PROSPECTS OF OIL AND GAS OUTPUT OF JURASSIC CARBONATE DEPOSITS IN THE UZUNKUDUK AREA
The article discusses the geological structure and petroleum potential of the Upper Jurassic carbonate deposits in the Uznkuduk area (Kashkadarya region, Uzbekistan). Based on integrated interpretation of 2D/3D seismic data and results from exploration drilling, the structural model of the field has been refined, reef structures and anomalous zones with improved reservoir properties have been identified. Locations for three exploration wells are proposed to assess the hydrocarbon potential of the identified anomalies.
Copyright (c) 2026 Qurbonov, Sh.B., Yuldashev, N.N., Kirgizov, I.Q., Jo‘rayev, F.O. (Muallif) https://creativecommons.org/licenses/by/4.0
INTEGRATED GEOLOGICAL AND ECONOMIC ASSESSMENT OF GROUNDWATER RESOURCES
The article analyzes the natural-geological characteristics and economic essence of groundwater based on an integrated approach. The patterns of hydrogeological formation, lithological and filtration properties of aquifers, and mechanisms of natural recharge are examined. The theoretical foundations of the economic evaluation of water resources as an economic category are considered. The necessity of integrating geological and economic factors in groundwater assessment is substantiated. The importance of hydrogeological monitoring, scientifically justified determination of exploitable reserves, and principles of sustainable use is highlighted. The research results are aimed at developing a comprehensive geological and economic assessment of groundwater resources and ensuring their rational utilization.
Copyright (c) 2026 Yarboboyev, T.N., Rabbimov, J.Sh., Jamilov, B.B. (Muallif) https://creativecommons.org/licenses/by/4.0
STUDY OF FACTORS INFLUENCING THE EFFECTIVENESS OF ABSORPTIONAL GAS PURIFICATION
It was studied that the increase in the process of absorption purification of natural gas from acidic components is closely related to hydrodynamic, geometric, and physicochemical factors, as well as the location, configuration, and direction of the colliding axes of the nozzles within the column. Based on such problems, studies were conducted on geometric factors, physicochemical factors related to the fact that the influence of certain factors creates serious difficulties in experimental studies, the influence of phase density and viscosity, and collision movement processes in turbulent flows.
Copyright (c) 2026 Dustqobilov, E.N. (Muallif) https://creativecommons.org/licenses/by/4.0
In this article, methods for absorbing natural gases from acidic components are used, while the efficiency of flow direction in nozzle absorbers largely depends on the shape of the nozzle used. For this purpose, various methods for activating mass transfer in devices with contact nozzles have been proposed. It has been established that the modern theory of the elementary mass transfer act allows for the theoretical determination of the mass transfer coefficient for a limited range of hydrodynamic regimes and interphase surface shapes, which differ significantly from the operating conditions of industrial nozzle columns.
Copyright (c) 2026 Dustqobilov, E.N., Yuldashev, T.R. (Muallif) https://creativecommons.org/licenses/by/4.0
DIURNAL VARIATIONS OF THE MAGNETIC FIELD AT THE YANGIBAZAR GEOPHYSICAL RESEARCH OBSERVATORY DURING PERIODS OF STRONG MAGNETIC STORMS
This paper analyzes the mean daily variations of the Earth’s magnetic field recorded at the Yangibazar Geophysical Research Observatory during periods of strong magnetic storms (Kp ≥ 7, Dst ≤ −100 nT). The study examines the diurnal dynamics, amplitude variations, and phase shifts of the main magnetic field components—H, D, and Z. The obtained results show that during strong magnetic storms, daily magnetic variations significantly increase compared to background levels and undergo notable structural changes. The findings are of great importance for the assessment and possible forecasting of earthquakes, as well as for improving regional geophysical monitoring systems.
Copyright (c) 2026 Egamberdiyev, S., Husomiddinov, A., Ruzimboev, F., Jo‘rayev, E. (Muallif) https://creativecommons.org/licenses/by/4.0
IDENTIFICATION OF OIL AND GAS BEARING AREAS OF THE MESOZOIC-CENOZOIC DEVELOPMENT OF STRUCTURES IN THE CENTRAL PART OF THE BUKHARA-KHIVA OIL AND GAS REGION
The article presents the results of the analysis of the age and spatial relationships of local structures of the third rank formed at various stages of the Mesozoic-Cenozoic history, the relationship between the spatial distribution of known hydrocarbon deposits and local structures of the third rank at various stages of the region's development, the results of the allocation of oil and gas-bearing areas taking into account the paleotectonic features of the Mesozoic-Cenozoic development of the region's structures. The article also presents a distribution of fields based on a third-rank structural plan, represented by local anticline structures—potential hydrocarbon traps in two aspects. Overall, based on paleotectonic data, oil and gas accumulation zones are identified, in which hydrocarbon fields are clustered in areas differing in age and inheritance, as well as reorganization and the emergence of new elements.
Copyright (c) 2026 Axmedov, X.R. (Muallif) https://creativecommons.org/licenses/by/4.0
STUDY OF THE WEAR OF PUMP FLOW SURFACES CAUSED BY SOLID PARTICLES IN MINE WATER
In this study, the process of hydro abrasive wear of pump flow surfaces was analyzed based on theoretical and experimental approaches. Pumps are widely used in ore mining operations to lift mine water containing solid mechanical impurities of various sizes to the surface. This leads to intensive wear of the main flow components such as impellers, guide vanes, and sealing rings. The reliability and energy efficiency of pump units largely depend on this wear process, making its in-depth study an актуal scientific problem.
Copyright (c) 2026 Xatamova, D.N., Yuldasheva, M.A. (Muallif) https://creativecommons.org/licenses/by/4.0
DEVELOPMENT OF A MULTISTAGE SUCTION AIR COOLING SYSTEM FOR RECIPROCATING COMPRESSORS AND INVESTIGATION OF ITS IMPACT ON ENERGY EFFICIENCY
The energy efficiency of reciprocating compressors largely depends on the initial thermodynamic state of the air entering the compressor, particularly its temperature. A high temperature of the suction air leads to a decrease in gas density, which increases the work required during the compression process and consequently results in higher electrical energy consumption. The aim of this study is to develop a multi-stage suction air cooling system for reciprocating compressors and to evaluate its effect on thermodynamic and aerodynamic characteristics using computational fluid dynamics methods. In the proposed technical solution, the suction air is cooled before entering the compressor through a series of sequentially arranged multi-stage tubular heat exchangers. The research was carried out using SolidWorks Flow Simulation software, where temperature and pressure fields were modeled. The simulation results showed that the temperature of the suction air decreases from 40 °C to 7–8 °C. This increases air density, reduces the work required for compression, and improves the energy efficiency of the compressor. At the same time, the pressure loss in the device ranges between 14–26 Pa, which indicates minimal hydraulic resistance. The obtained results confirm that the proposed multi-stage cooling system increases the volumetric efficiency of the compressor, reduces electrical energy consumption, and improves overall energy efficiency. The proposed technical solution can be applied in Reciprocating compressor, suction air, multi-stage cooling, heat exchanger, computational fluid dynamics, energy efficiency, volumetric efficiency, pressure loss.
Copyright (c) 2026 Yuldashev, E.U., Jo‘rayev, Sh.N. (Muallif) https://creativecommons.org/licenses/by/4.0
ANALYSIS OF TECHNOLOGICAL METHODS FOR IMPROVING THE COMPLETENESS OF BLASTHOLE UTILIZATION IN DRILLING AND BLASTING OPERATIONS IN UNDERGROUND MINE WORKINGS
The paper addresses modern technological approaches aimed at improving blasthole utilization and preventing the formation of unbroken bottom zones (“cups”) during drilling and blasting operations in underground mine workings. The physical mechanisms responsible for cup formation, including non-uniform explosive energy distribution, lack of free surfaces, and specific features of detonation wave interaction with the rock mass, are analyzed. Scientifically substantiated methods such as reverse initiation of blasthole charges, intentional overdrilling, application of air gaps, combined stemming, and preliminary physico-chemical weakening of the rock mass using surfactants are considered. It is shown that the integrated application of these methods makes it possible to increase the blasthole utilization coefficient to 0.90–0.95, reduce the specific explosive consumption, and improve face quality while simultaneously decreasing seismic and environmental impacts.
Copyright (c) 2026 Zairov, Sh.Sh., Nutfulloyev, G‘.S., G‘oyibnazarov, B.A., Ismatillayev, N.A. (Muallif) https://creativecommons.org/licenses/by/4.0