• Energy Research
• 11. Sustainability close
• UZ close
• E3S Web of Conferences close

Development of proposals for adapting the existing methodology for calculating the available throughput to the operating conditions of the railways of Uzbekistan, taking into account the factors that ensure traffic safety when passing high-speed passenger trains. Methods: Grapho-analytical approaches and a comparative analysis method were used to determine the throughput of railway lines with mixed train traffic. Results: The main factors influencing the capacity of lines, advantages and disadvantages for each existing method for determining the capacity of railway lines are given. To assess the quality of transportation processes on railway lines, experimental train schedules were constructed. Based on the analysis of their indicators, a formula was proposed for calculating the throughput on double-track lines when passing high-speed passenger trains. Practical significance: The application of the proposed methodology improves the calculations of the performance indicators of sections with an unparalleled train schedule.

The article analyzes the technical condition of urban reinforced concrete bridge structures. The authors studied the technical passports of all bridges and overpasses in Tashkent and made direct technical inspections of more than 10 bridge structures. As a result, most of the shortcomings and defects of the existing bridge structures in the city were revealed. In Tashkent, there is a significant number of reinforced concrete bridge structures, the service life of 60 to 100 years (24% of the total number), a significant part of which (42%) has been operated for many years without major repairs. A "four-level" approach is proposed, which contains four stages of analysis, and evaluates the technical condition of the operated reinforced concrete bridge structures.

The article is a study of the process of formation of the organizational and legal mechanism for ensuring environmental safety in the Russian Federation, as well as an analysis of a number of urgent problems arising in the implementation of the state environmental policy by the country. The authors’ study is interdisciplinary in nature and includes not only a legal analysis of regulatory acts adopted by the Russian state in order to ensure environmental safety, but also some assessments of an economic and natural-scientific (environmental) nature related to the functioning of resource-extracting sectors of Russian industry and their impact on state of the environment. Considerable attention is paid to the worldview aspects of the topic under study. The role of the territories of the Russian Federation not disturbed by economic activity in maintaining the sustainability of the global ecosystem is emphasized.

The article gives recommendations on the effective use of the State Automated Information System for Emergency Response in case of road accidents on the roads of the Republic of Uzbekistan, the introduction and development of the use of intelligent transport systems at transport enterprises of the Republic of Uzbekistan.

In the article, using the criterion analysis method, the analysis of the stability of total costs, the sensitivity of parameters to changes in the initial data (to the analysis of the influence of errors in the initial data) is carried out, and recommendations are given on the use of the obtained parameters for 10 kV distribution electrical networks.

This article illustrates new methods for automatically fixing and determining the calculation loads of electrical consumers, in particular the maximum load. The accuracy in the calculations is increased taking into account several factors affecting the maximum load values. It also offers a method and algorithm determination of the maximum electrical loads in urban electrical loads.

The Arctic region has received increasing attention in recent years. One of the topical areas of transport system development in the Russian Federation is the transit potential of the Arctic region as well as transport connections with the Barents region countries. The purpose of the research is to make a transport and economic research of variants of automobile transport network development in the Barents region - the transport route Arkhangelsk - Naryan-Mar. The research objectives are: to analyse regional transport network of Nenets Autonomous District; to develop versions of Arkhangelsk - Naryan-Mar transport routes; to estimate transport and economic characteristics and choose a variant of motor transport route. Two variants of the Arkhangelsk - Naryan-Mar road route have been considered in the course of this work. The first one is 887 kilometres long and goes along the sparsely populated territory, through the village Volokovaya. The second route is 940 km long. It is situated in the north through 10 settlements, including the town of Mezen, the administrative centre of Mezen municipal district. A more feasible route is the second option, which runs along the shores of the Mezen Bay of the White Sea and the Chesh Bay of the Pechora Sea. In spite of the fact that this route is 77 km longer than Route 1, it will be a transport artery, passing through 10 settlements, among which is the town of Mezen, the administrative centre of Mezen municipal district.

The article contains an optimization analysis of the regularities of the formation of the parameters of urban distribution networks of 10 kV, taking into account the technical limitations by the method of criteria analysis, which revealed the feasibility of using a limited number of used cable cross-sections, depending on the density of the electrical load and on the schemes of urban distribution networks.

In this article, we propose a new method for determining the maximum load of electric consumers in urban electric networks, which differs from existing methods in more accurate and reliable determination of the maximum loads. Based on the determination of the maximum loads of the objects of urban electrical networks, it is concluded that the proposed methods are determined by high accuracy and minor errors.

The article considers the possibility of using the surface of various reservoirs characteristic of regions when allocating land for lowpower solar power plants in Uzbekistan. When implementing low-power solar power plants in Uzbekistan, a certain amount of land resources is required (for installing solar panels). From the point of view of respect for natural capital (saving land resources), the method of installing solar panels directly above the surface of water basins based on the corresponding maps of water basins is technically and economically effective. The methodological basis of the research is the results of researchers work on the problems of land relations and land management. In the research, a systematic approach to the analysis of land use has been chosen, in which a variety of tools were used to determine the essence of the analyzed phenomena, processes and patterns. In recent years, industry has been rapidly developing in rural areas of the Yangiyul district of Tashkent Province of Uzbekistan. In this regard, the problems of effective use of land resources, especially targeted use of irrigated land, has become urgent. This means that in the future there will be problems when allocating land for the installation of low-power solar power plants.