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Civil and Environmental Engineering Commons™

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Ministry of Higher and Secondary Specialized Education of the Republic of Uzbekistan

Articles 301 - 320 of 320

Full-Text Articles in Civil and Environmental Engineering

Analysis Of Characteristics Of Parabolic And Parabolocylindrical Hubs, Comparison Of Data Obtained On Them, J.R. Kodirov, S.Sh. Khakimova, Sh.M. Mirzaev Aug 2019

Analysis Of Characteristics Of Parabolic And Parabolocylindrical Hubs, Comparison Of Data Obtained On Them, J.R. Kodirov, S.Sh. Khakimova, Sh.M. Mirzaev

Journal of Tashkent Institute of Railway Engineers

Solar energy technologies can be quickly deployed and have the potential for a global transfer of technology and innovation. In order to manufacture parabolic and parabolic cylindrical concentrators, an analytical review of these two types of solar devices was carried out and, after their creation, experiments were conducted on them in the season of maximum solar radiation. The article also presents data and their comparison for planning subsequent actions of research activities.

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Features Of Functioning Container Terminal In Supply Chains, D.I. Ilesaliev, Sh.R. Abduvahitov Aug 2019

Features Of Functioning Container Terminal In Supply Chains, D.I. Ilesaliev, Sh.R. Abduvahitov

Journal of Tashkent Institute of Railway Engineers

The purpose of this article is to study the container terminal as a technical system. In this regard, in this article it is necessary to investigate the functioning of the container terminal, associated with the random nature of the incoming and outgoing containers from the terminal. An example of a method for determining the number of reach players is also given.

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Analysis Of Work Of Passenger Trains On Two-Zone Sections And Automation Of Alerts Issued To Them, H.S. Toxirov, A.M. Bashirova Aug 2019

Analysis Of Work Of Passenger Trains On Two-Zone Sections And Automation Of Alerts Issued To Them, H.S. Toxirov, A.M. Bashirova

Journal of Tashkent Institute of Railway Engineers

“Uzbekistontimir yollari” JSC makes a great contribution to ensuring the safety of passenger transportation. Passenger traffic is constantly growing and growth is expected in the future, and competition is growing in the suburban passenger transport market. Increasing the size of passenger trains requires even more attention to safety. The article discusses the possibility of organizing a zonal movement on a suburban section X-T and to facilitate the work of the duty officers at the automation station issuing warnings for trains.

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Principles And Features Of Blockchain Technology Implementation In The Railway Industry, L.F. Kazanskaya, N.A. Drivolskaya Aug 2019

Principles And Features Of Blockchain Technology Implementation In The Railway Industry, L.F. Kazanskaya, N.A. Drivolskaya

Journal of Tashkent Institute of Railway Engineers

Objective: to Consider the advantages and disadvantages of using blockchain technology and the possibility of introducing cryptocurrencies in the transport sphere of Russia. Methods: methods of generalization, grouping, comparative analysis, system approach, problem statement, study of literary sources and normative-legislative documents, results of activity, study and generalization of experience were Used. Results: blockchain technology applied to cryptocurrencies is Considered. The principle of operation of the blockchain technology in the transaction of bitcoins between users in relation to the railway industry. The conclusion is made about the problems of introduction of cryptocurrencies as payment instruments in the near future due to …

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Peculiarities Of Corporate Governance On Railway Transport Of The Republic Of Uzbekistan, M.G. Grigoryan, F.Z. Karakulov Aug 2019

Peculiarities Of Corporate Governance On Railway Transport Of The Republic Of Uzbekistan, M.G. Grigoryan, F.Z. Karakulov

Journal of Tashkent Institute of Railway Engineers

Peculiarities and problems of the development of corporate governance of the railway company of «Uzbekistan Temir Yo’llari» JSC in the current economic conditions are considered. The relevance of the chosen direction of research is determined by its high significance for the economic, political and geopolitical development of the railway transport of the Republic of Uzbekistan. Political and geopolitical interest is associated with a significant impact on the national economy, which is provided by the railway transport companies of the Republic of Uzbekistan, as well as with the desire for the interaction of other enterprises in order to obtain additional competitive …

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Analysis Of Factors Determining Efficiencyhead Leaving Stain Rays, A.E. Vorobev, Чекушена Т.В., Tcharo X Jun 2019

Analysis Of Factors Determining Efficiencyhead Leaving Stain Rays, A.E. Vorobev, Чекушена Т.В., Tcharo X

Gorniy vestnik Uzbekistana

The efficiency of irrigation of stacks is an important component, ensuring the intensification of the heap leaching process in the extraction of metals from poor ores. The study of the irrigation process in heap leaching should be aimed at improving the economic and technological efficiency of the applied irrigation methods. In this regard, the study of the factors affecting the evaporation of leaching solutions in HL will make it possible to make new and improved decisions regarding the devices and methods for the supply of solutions. The influence of coarseness and agglomeration on irrigation efficiency was also considered.

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Monometric Mapping Flotation Process At Mikheevskiy Furniture Factory, Yu.G. Nikitina, I.P. Poyezhaev, G.A. Myrzabek, R.A. Musaev Mar 2019

Monometric Mapping Flotation Process At Mikheevskiy Furniture Factory, Yu.G. Nikitina, I.P. Poyezhaev, G.A. Myrzabek, R.A. Musaev

Gorniy vestnik Uzbekistana

An integrated study on the sandstone hosted uranium deposits on the base of hydrodynamic simulation has been carried out to define optimal field opening schemes. The reservoir simulation and mass-transfer models for selected field opening schemes, ways of optimizing existing facilities and building of optimized scheme are the main results of this investigation.

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Prospects Of Chatkalo-Kuramin's Diamond Presence Zones And Correlated Territories, Uzbekistan, A.M. Azizov, R.G. Yusupov, S.D. Fatkhullaev Mar 2019

Prospects Of Chatkalo-Kuramin's Diamond Presence Zones And Correlated Territories, Uzbekistan, A.M. Azizov, R.G. Yusupov, S.D. Fatkhullaev

Gorniy vestnik Uzbekistana

The Middle and South Tien Shan as orogenic regions with accompanying sharp changes in temperature and pressure (Koshmansai diatreme) are characterized by conditions for the formation of diamond manifestations. Prospects of Uzbekistan for radical manifestations of diamonds are assigned to the activated regions of the Archean (?) With manifestations of Lower Proterozoic eclogite-like formations with a complex of associated alpinotype ultrabasites, as well as alkaline intraplate basaltoids, K1.

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Improvement Of Thermal Technical Characteristics Of Wall Ceramic Material Based On Low-Sorted Lyssovid Suglinks And Modified Liquid Glass, Anvar Ishanovich Adilkhodjayev, I.M. Mahamataliev, A.T. Ilyasov Mar 2019

Improvement Of Thermal Technical Characteristics Of Wall Ceramic Material Based On Low-Sorted Lyssovid Suglinks And Modified Liquid Glass, Anvar Ishanovich Adilkhodjayev, I.M. Mahamataliev, A.T. Ilyasov

Journal of Tashkent Institute of Railway Engineers

Application of low-grade loesslike loams (NLS) in the production of effective wall ceramics requires development of methods of increase of frost-resistance of ceramic porizovannoy matrix. It can be attained by adjusting of porosity of structure. In the Tashkent architectural-build institute possibility of making of an effective wall ceramic material is studied on the basis of NLS with the use of dobavki- ash-taking away of Angrenskoy TES and modified liquid glass as a modifier of porous structure. It is set that introduction of addition ash-taking away in an amount 25 % from mass of NLS and burning at the temperature of …

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The Risk Of Ballast Graphic Towards Pozzles Moving Frequency, Sh.Sh. Abdukamilov, A.Yu. Mamadaliyev Mar 2019

The Risk Of Ballast Graphic Towards Pozzles Moving Frequency, Sh.Sh. Abdukamilov, A.Yu. Mamadaliyev

Journal of Tashkent Institute of Railway Engineers

A special place in identifying the features of the vibrational process of ballast material, it is necessary to take, first of all, the nature of the process of oscillations. Its identification helps to determine the causes of their occurrence, which is very important for assessing the influence of oscillations on the properties and state of the ballast layer. Knowledge of the nature of the oscillatory process makes it possible in the future to simulate it in laboratory conditions to determine the degree of decrease in strength properties of ballast material, clogged sands under the influence of vibrodynamic load, during the …

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Theoretical Aspects Of Structural And Simulation Modeling Of The Macrostructure Of Composite Building Materials, Anvar Ishanovich Adilkhodjayev, I.M. Mahamataliev, S.S. Shaumarov Mar 2019

Theoretical Aspects Of Structural And Simulation Modeling Of The Macrostructure Of Composite Building Materials, Anvar Ishanovich Adilkhodjayev, I.M. Mahamataliev, S.S. Shaumarov

Journal of Tashkent Institute of Railway Engineers

At the present time, the description of the joint work of multi-component, high-quality concretes in the framework of the structural and simulation modeling of cement composites is a very topical task of building materials science. In the context of the solution of the above problems, theoretical aspects of structural and simulation modeling are presented on the example of the developed program "Concrete-technology", which allows to predict the strength properties of multicomponent high-quality concrete at the macro structural level.

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Determination Of The Carrying Capability Of The Basis Of The Support Of A Contact Network Of The Railways And Vertical Force, Acting On The Base, K.S. Lesov, A.Kh. Mavlyanov, U.E. Ergashev Dec 2018

Determination Of The Carrying Capability Of The Basis Of The Support Of A Contact Network Of The Railways And Vertical Force, Acting On The Base, K.S. Lesov, A.Kh. Mavlyanov, U.E. Ergashev

Journal of Tashkent Institute of Railway Engineers

The variant workings and calculations are executed on fixing of supports of contact trackage. Structural-technical decisions are Given on building of supports of contact network on earthen linen from sandy soils.

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Model Of Search For The Placement Of Warehouses Of Tarnet-And-String Cargo Depending On The Cargo, Avaz Mirsultanovich Merganov Dec 2018

Model Of Search For The Placement Of Warehouses Of Tarnet-And-String Cargo Depending On The Cargo, Avaz Mirsultanovich Merganov

Journal of Tashkent Institute of Railway Engineers

To determine the feasibility of warehouses for packaged goods, it is necessary to understand the main volumes of cargo traffic, as well as to determine the optimal placement of these objects. These questions are developed and solved in this study

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The Principles Of Calculation Of Preliminary-Stressed Reinforced Concrete Elements Of A Tripping Structure Under Dispersed Arming, Ch.S. Raupov, E.T. Yahshiyev, A.B. Karimova Dec 2018

The Principles Of Calculation Of Preliminary-Stressed Reinforced Concrete Elements Of A Tripping Structure Under Dispersed Arming, Ch.S. Raupov, E.T. Yahshiyev, A.B. Karimova

Journal of Tashkent Institute of Railway Engineers

It is known that the basic principle of the use of reinforcement in the cross section of building structures is associated with ensuring their strength under the action of bending, tensile loads and impacts and the need to reinforce concrete elements that do not have sufficient structural strength for tension and bending. Depending on the purpose and features of the building structures, there are different types of reinforcement and ways to strengthen the elements.

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Model Of Search For The Placement Of Warehouses Of Tarnet-And-String Cargo Depending On The Cargo, Avaz Mirsultanovich Merganov Dec 2018

Model Of Search For The Placement Of Warehouses Of Tarnet-And-String Cargo Depending On The Cargo, Avaz Mirsultanovich Merganov

Journal of Tashkent Institute of Railway Engineers

To determine the feasibility of warehouses for packaged goods, it is necessary to understand the main volumes of cargo traffic, as well as to determine the optimal placement of these objects. These questions are developed and solved in this study

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Ways Of Rational Enhancements Of Passage And Transportable Ability On Railways Jsc "Uty", S.K. Xudayberganov, A.A. Svetashev, Sh.Sh. Kayumov Dec 2018

Ways Of Rational Enhancements Of Passage And Transportable Ability On Railways Jsc "Uty", S.K. Xudayberganov, A.A. Svetashev, Sh.Sh. Kayumov

Journal of Tashkent Institute of Railway Engineers

The constant increase in the number of passenger trains has led to the fact that the semi-automatic blocking does not cope with the timely passing trains through the section. This article discusses the carrying capacity of railway section "N-B". The reserve capacity of this section is practically absent, the removal rate of passenger trains increases, which negatively affects the work of the entire railway section. Disposable and required carrying debility is determined. The method of increasing the capacity is chosen for each line depending on the given dimensions of movement, local conditions and technical and economic efficiency of different options.

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Some Aspects Of Studying The Structure Of Construction Materials By The Method Of Mercury Purometry, Anvar Ishanovich Adilkhodjayev, I.A. Kadirov Sep 2018

Some Aspects Of Studying The Structure Of Construction Materials By The Method Of Mercury Purometry, Anvar Ishanovich Adilkhodjayev, I.A. Kadirov

Journal of Tashkent Institute of Railway Engineers

The article gives a classification of methods for controlling the porous structure of materials. The parameters of the porosity of aerated concrete were investigated by the method of mercury porosimetry. The method of mercury porosimetry is based on the fact that a liquid that does not wet a solid penetrates into its pores only when exposed to external pressure. The total porosity of aerated concrete according to mercury porosimetry is 49.28%

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Automatic Monitoring System State Of Hydrotechnical Structures, O.V. Ruban Jun 2018

Automatic Monitoring System State Of Hydrotechnical Structures, O.V. Ruban

Gorniy vestnik Uzbekistana

The article outlines the possibilities for operational control of the technical condition of buildings. To this end, we propose integrated systems Trimble 4D Control (T4D) and ASKGTS "Titan", which provide automatic measurement and registration of physical quantities characterizing the state of the structure, as well as natural and technogenic parameters affecting the condition of the structure.

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Comparative Analysis Of Road Roughness Specifications, Abduvokhid Yunusov, Narikawa Kazuo Jan 2018

Comparative Analysis Of Road Roughness Specifications, Abduvokhid Yunusov, Narikawa Kazuo

Acta of Turin Polytechnic University in Tashkent

In this paper, it is given that comparative analysis of road pavement roughness specifications between Uzbekistan and Japan. Road roughness measurement methods and acceptance values in construction and maintenance were analyzed. Based on comparative analysis, we developed recommendations about pavement roughness measurement methods for road authority of Uzbekistan.

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Iri Roughness Index Requirements For Highway Functional Classification, Abduvokhid Yunusov, Jamshid Sodikov Jan 2018

Iri Roughness Index Requirements For Highway Functional Classification, Abduvokhid Yunusov, Jamshid Sodikov

Acta of Turin Polytechnic University in Tashkent

The paper reviews the role of highway functional classification in pavement management. Predominantly, technical classification is used in pavement management in CIS countries. The paper raises importance of highway functional classification in pavement maintenance in order to efficiently manage road network. IRI roughness index is widely used to monitor, assess road condition, analyze life cycle of the pavement. Authors proposed IRI values according to highway functional classification.

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