scholarly journals Complex approach to transport infrastructure of Arctic region calculations

2019 ◽  
Vol 265 ◽  
pp. 04002
Author(s):  
Vladimir Ulitsky ◽  
Elena Gorodnova
Keyword(s):  
Numerical Calculation ◽  
Soil Structure ◽  
Research Work ◽  
Arctic Region ◽  
Transport Infrastructure ◽  
Natural Soil ◽  
Northern Sea Route ◽  
Complex Approach ◽  
Permafrost Soils ◽  
Liquefied Gas

At present experts of «Base and Foundation» department of St. Petersburg Transport University do research work and design projects for transport infrastructure objects. Numerical calculation of subsoil in northern ports of Sabbeta and Tanalau settlements in Russian Arctic region is one of these successfully fulfilled projects. Specific features of these ports are the following: to construct building foundations and road embankments on permafrost soils, to predict functioning of compound sea berths and river piers when super heavy arctic vessels transport liquefied gas along the Northern sea route. Numerical calculation allowed defining soil thawing zone under the northern ports’ structures. Experience of experts permitted to choose the best solutions to preserve natural soil structure and exclude uneven deformations, which destroy objects and complicate roads functioning in permafrost zone.

scholarly journals The nuclear icebreaker fleet of Russia in the first quarter of the XXI century. Challenges and prospects for the development of the Northern Sea Route

2021 ◽  
pp. 14-25
Author(s):  
Ю.Л. Бордученко ◽  
И.Г. Малыгин ◽  
В.Ю. Каминский ◽  
В.А. Аксенов
Keyword(s):  
Decisive Role ◽  
Arctic Region ◽  
The Arctic ◽  
Arctic Seas ◽  
The Sustainable Development ◽  
The North ◽  
Russian Economy ◽  
Current State ◽  
Northern Sea Route ◽  
Transport Problems

Арктическая зона в XXI веке становится важнейшим гарантом устойчивого развития Российской Федерации. Вклад Севера в экономику России во многом будет определяться масштабами и темпами развития Арктической транспортной системы. Необходимо расширение коммерческого и научно-исследовательского судоходства, развитие транспортных узлов и коридоров, полярной авиации, грузопассажирских морских полярных перевозок. В этих условиях Россия в целях обеспечения своих геополитических интересов должна постоянно поддерживать активное присутствие в этом регионе. Оно выражается в проведении научных исследований, разведке и добыче полезных ископаемых, обеспечении морских грузоперевозок с использованием ледоколов и специализированных ледокольно-транспортных судов. Этого невозможно достичь без развития уникального атомного ледокольного флота. В настоящее время Россия является мировым лидером в области применения атомного ледокольного флота для решения транспортных задач в морях Арктики и неарктических замерзающих морях. Для успешной конкуренции России необходимо не упускать этого лидерства и постоянно развивать и совершенствовать атомный ледокольный флот как ключевое звено инфраструктуры функционирования Северного морского пути. В статье представлен краткий обзор текущего состояния и перспектив развития атомного ледокольного флота России. Показана определяющая роль атомного ледокольного флота в обеспечении судоходства по трассам Северного морского пути для развития экономики Арктического региона России. The Arctic zone in the XXI century is becoming the most important guarantor of the sustainable development of the Russian Federation. The contribution of the North to the Russian economy will largely be determined by the scale and pace of development of the Arctic Transport System. It is necessary to expand commercial and research shipping, develop transport hubs and corridors, polar aviation, and cargo and passenger sea polar transportation. In these circumstances, Russia must constantly maintain an active presence in this region in order to ensure its geopolitical interests. It is expressed in conducting scientific research, exploration and extraction of minerals, providing sea cargo transportation using icebreakers and specialized icebreaker-transport vessels. This cannot be achieved without the development of a unique nuclear icebreaker fleet. Currently, Russia is a world leader in the use of nuclear-powered icebreaking fleet for solving transport problems in the Arctic seas and non-Arctic freezing seas. For successful competition, Russia must not lose this leadership, constantly develop and improve the nuclear icebreaker fleet as a key link in the infrastructure of the Northern Sea Route. The article provides a brief overview of the current state and prospects for the development of the Russian nuclear icebreaker fleet. The article shows the decisive role of the nuclear icebreaker fleet in ensuring navigation along the Northern Sea Route for the development of the economy of the Arctic region of Russia.

scholarly journals A New Approach of Smart Mobility for Heavy Goods Vehicles in Casablanca

2021 ◽  
Author(s):  
Mohammed Mouhcine Maaroufi ◽  
Laila Stour ◽  
Ali Agoumi
Keyword(s):  
Environmental Sustainability ◽  
Traffic Congestion ◽  
Traffic Management ◽  
Road Traffic ◽  
Smart Cities ◽  
Research Work ◽  
Transport Infrastructure ◽  
Transport Systems ◽  
Smart Mobility ◽  
Heavy Goods Vehicles

Managing mobility, both of people and goods, in cities is a thorny issue. The travel needs of urban populations are increasing and put pressure on transport infrastructure. The Moroccan cities are no exception and will struggle, in the short term, to respond to the challenges of the acceleration of the phenomenon of urbanization and the increase in demand for mobility. This will inevitably prevent them from turning into smart cities. The term smart certainly alludes to better use of technologies, but smart mobility is also defined as “a set of coordinated actions intended to improve the efficiency, effectiveness and environmental sustainability of cities” [1]. The term mobility highlights the preponderance of humans over infrastructure and vehicles. Faced with traffic congestion, the solutions currently adopted which consist of fitting out and widening the infrastructures, only encourage more trips and report the problem with more critical consequences. It is true that beyond a certain density of traffic, even Intelligent Transport Systems (ITS) are not useful. The concept of dynamic lane management or Advanced Traffic Management (ATM) opens up new perspectives. Its objective is to manage and optimize road traffic in a variable manner, in space and in time. This article is a summary of the development of a road infrastructure dedicated to Heavy Goods Vehicles (HGV), the first of its kind in Morocco. It aims to avoid the discomfort caused by trucks in the urban road network of the city of Casablanca. This research work is an opportunity to reflect on the introduction of ITS and ATM to ensure optimal use of existing infrastructure before embarking on heavy and irreversible infrastructure projects.

scholarly journals INFLUENCE OF CLAYEY SOIL STRUCTURE ON ITS MODULUS OF STIFFNESS

1999 ◽  
Vol 5 (2) ◽  
pp. 108-115
Author(s):  
Antanas Alikonis
Keyword(s):  
Soil Structure ◽  
Clayey Soil ◽  
Deformation Modulus ◽  
Natural Soil ◽  
Logarithmic Scale ◽  
Compression Curve ◽  
Engineering Structures ◽  
Compacted Soil ◽  
Deformation Properties ◽  
Compressibility Coefficient

Disturbance of soil structure influences its density, strength and deformation properties. Among other cases soil structure could be disturbed by compacting it. It is possible to increase deformation properties of sand or gravel by compacting them. However, for clay soils deformation properties may increase if they are compacted. Differences of settlements of a building depends on the different deformation properties of the artificially placed and compacted soils beneath the foundations. Different values of stiffness modulus are used for the structural design of the buildings which are constructed on the soils with different compressibility. Coefficient of changeability of soil compression (1) was used. It may be calculated as a ratio of maximum and minimum values of deformation modulus, or according to the maximum and minimum values of coefficient of relative compressibility (3). Coefficient of the relative compressibility of soil can be calculated depending on the maximum and minimum values of tip resistence from CPT test (5). According to the coefficient of the relative compressibility we could estimate whether the soil is uniform, nonuniform or extremely non-uniform. It is important for the design of civil engineering structures. Mechanical properties of soils may be back-calculated using theoretical values of settlements and loads. Most frequently within the building layout area soils are natural and artificially compacted. For a compacted soil it is possible to draw compression curve in semi-logarithmic scale using compression curve of the same natural soil and the void ratio of the artificially placed and compacted soil. Thus we can determine compressibility of the soil with disturbed or undisturbed structure. Using parameters of soil compressibility, we can determine the coefficient of the relative compressibility, maximum and minimum values of settlement and modulus of stiffness.

scholarly journals Assessing the Adsorption of Bipyridinium Herbicides on Model Soil Granular Media

2021 ◽  
Vol 2 ◽  
Author(s):  
Nahim R. Tadeo-Jalife ◽  
Ruben Vasquez-Medrano ◽  
Ivan R. Quevedo
Keyword(s):  
Quartz Sand ◽  
Supporting Electrolyte ◽  
Research Work ◽  
Silica Sand ◽  
Supernatant Fraction ◽  
Natural Soil ◽  
Soil Matrix ◽  
Adsorption Mechanisms ◽  
Model Soil ◽  
General Terms

In this research work, the adsorption of two bipyridinium herbicides (i. e., Diquat and Paraquat) on natural soil and on model soil surfaces has been studied at different water chemistries commonly found in the environment (e.g., pH, supporting electrolyte, and presence of humic or fulvic acids). The experimental work was carried out in the laboratory, using experimental batches of clean quartz sand, silanized quartz sand and sandy soil as a model of agricultural topsoil where herbicides are commonly used and can be adsorbed. The concentrations reached at the equilibrium were analyzed by UV-Visible Spectroscopy for the supernatant fraction of the samples. The concentrations were fitted using adsorption isotherms to determine the adsorption mechanisms (i.e., chemisorption or physisorption) at the interface. In general terms, we have encountered that the nature of the soil matrix plays an important role on the study of pollutant adsorption. In experiments carried out on silica sand, the most abundant component of the natural soil matrix, no significant sorption was observed (<1.5 mg/g) for any of the herbicides. Yet, in experiments carried out on the presence of clay and natural organic matter (i.e., fulvic and humic acids), the adsorption of both herbicides is much higher, likely due to the chemical structure of the molecules that might facilitate the complexation with both herbicides. This investigation improves our understanding of the role that soil granular components play on the absorption of two commonly used herbicides and adequately predict their fate in natural aquatic environments.

scholarly journals The Northern Sea Route: The Need and Prospects for Transit of Raw Materials

2020 ◽  
pp. 92-97
Author(s):  
Aleksey Mikhailovich Khorev
Keyword(s):  
Russian Federation ◽  
Raw Materials ◽  
Arctic Region ◽  
The Arctic ◽  
Existing Problems ◽  
Current State ◽  
Northern Sea Route ◽  
The Russian Federation ◽  
Near Future ◽  
The Arctic Region

The prospects and problems of using the Northern sea route for transportation of raw materials are examined. The author makes an attempt to study the current state of the Northern sea route as the most important transport corridor of the Arctic region, and analyzes the existing problems that reduce the economic efficiency of cargo transit along the NSR. The ways to improve the efficiency of transportation of raw materials along the Northern sea route are reviewed. The author assesses the importance of the Arctic region for the Russian Federation as a whole, as well as he points out the need for its development in the near future.

scholarly journals Cooling of near-pile permafrost soils in the Arctic region

2021 ◽  
Vol 23 (4) ◽  
pp. 138-146
Author(s):  
Alexey S. Klimov ◽  
Rurik T. Emelyanov ◽  
Ekaterina V. Chumakova ◽  
Oksana L. Klimova
Keyword(s):  
Arctic Region ◽  
The Arctic ◽  
Permafrost Soils ◽  
The Arctic Region

scholarly journals Influence of Ground Granulated Blast Furnace Slag on the Index, Compaction Parameters and Mechanical Strength of Khairpur Mir’s Natural Soil

2020 ◽  
Vol 10 (1) ◽  
pp. 83-88
Author(s):  
Touqeer Ali Rind ◽  
Hemu Karira ◽  
Shahzad Ali Mirani ◽  
Ali Khan Mari
Keyword(s):  
Blast Furnace ◽  
Mechanical Strength ◽  
Blast Furnace Slag ◽  
Research Work ◽  
Cost Benefit ◽  
Industrial Wastes ◽  
Natural Soil ◽  
Strength Parameters ◽  
Granulated Blast Furnace Slag ◽  
Furnace Slag

AbstractIn developing countries like Pakistan, Due to rapid growth and population, an increase in the production of industrial waste is rising significantly day by day. Stabilization of soil using those industrial wastes not only gives proper usage of waste materials but also increases the cost-benefit ratio as a whole. In this research work, an attempt was made to use Ground granulated blast furnace slag (GGBFS) in the stabilization of District Khairpur Mirs’ soil. Generally, while dealing with building construction industry such as foundations for buildings, highways such as subgrades as a foundation and in earthen dams as landfills sometimes there exist naturally occurring unsuitable soils. District Khairpur Mirs’ soil is accounted for the different laboratory tests and the concerned District Khairpur Mirs’ soil found to be relatively unsuitable; therefore, various percentages of ground granulated blast furnace slag were added to make it suitable. To improve the concerned soil different percentages of slag are used, and samples thus formed so for were tested in the laboratory for this research work. Various laboratorial tests like particle size distribution, Atterberg limits, Modified Proctor test, AASHTO soil classification, and CBR test were performed on controlled and stabilized soil samples. The aim of this research study was to examine the influence of ground granulated blast-furnace slag (GGBFS) on the index, Compaction and mechanical strength parameters of natural Khairpur Mirs’ soil. Finally, based on laboratorial tests, it was observed that stabilization of soil by GGBFS made favourable changes on the index, compaction and strength parameters of District Khairpur Mirs’ soil.

scholarly journals Meteor communication network in the monitoring system for technical means of navigation safety of the northern sea route

2020 ◽  
Author(s):  
В.Л. Мартынов ◽  
В.И. Дорошенко ◽  
И.Л. Скрипник
Keyword(s):  
Communication Network ◽  
Transport Infrastructure ◽  
The Arctic ◽  
Radio Link ◽  
Utilization Factor ◽  
Link Utilization ◽  
Northern Sea Route ◽  
Timing Diagram ◽  
Radio Signals ◽  
Special Parameter

Изложены возможности и особенности использования в Арктической зоне России сети метеорной связи, которую целесообразно применить в целях обеспечения безопасности функционирования объектов транспортной инфраструктуры Северного морского пути, что способствует повышению экономической эффективности в целом всего морского транспортно-технологического процесса, а также для обеспечения безопасности судоходства в указанном регионе с учетом специфики распространения УКВ-радиосигналов и больших расстояний между объектами. Представлена временная диаграмма, характеризующая процесс функционирования радиолинии метеорной связи, соответственно, для оценки прерывистости связи предлагается использовать специальный параметр под названием коэффициент использования радиолинии. Показано, что для обеспечения энергетического контакта необходимой длительности между удаленными ведущими и ведомыми станциями метеорной связи в качестве пассивного ретранслятора может насыщенный метеорный след, способный обеспечить требуемую устойчивую связь, удовлетворяющей заданным требованиям по защите информации и по вероятности ошибочного приема ложных знаков с сохранением целостности сообщений при условии прерывистости энергетических контактов между корреспондентами. This paper describes the possibilities and features of using the meteor communication network in the Arctic zone of Russia. It is advisable to use this meteor communication network in order to ensure the safety of the transport infrastructure of the Northern sea route. This contributes to the overall economic efficiency of the entire Maritime transport and technological process. Also, it is appropriate to ensure the safety of navigation in the region, taking into account the specifics of the propagation of VHF radio signals and long distances between the objects. A timing diagram characterizing the operation of the meteor radio link is presented, so it is proposed to use a special parameter called the radio link utilization factor to estimate communication discontinuity. It has been shown that a saturated meteor trail can be used as a passive repeater to provide energy contact of the desired duration between the remote leading and trailing meteor communication stations. This is capable to provide the required stable communication that meets the specified data protection requirements. And it is also urgent for the probability of erroneous false signs reception with preservation of messages integrity under condition of energy contacts discontinuity between correspondents.

scholarly journals Arctic Communication System Development as a Factor of Guaranteed Access Maintenance to Strategic Resources

2018 ◽  
Vol 8 (3) ◽  
pp. 6-19
Author(s):  
V. F. Bogachev ◽  
S. Yu. Kozmenko ◽  
A. B. Teslya ◽  
A. A. Shchegolkova
Keyword(s):  
Communication System ◽  
New Technologies ◽  
Arctic Region ◽  
Transport Infrastructure ◽  
The Arctic ◽  
Main Task ◽  
Strategic Resources ◽  
The Impact ◽  
Further Development ◽  
The Arctic Region

The development of new technologies, reducing the economic and physical costs of access to the unique resources of the Arctic, has simultaneously identified a set of interrelated economic and geopolitical problems arising during the Arctic territory development. Therefore, the subject of research of the article is the problem of the Arctic communication system formation, without which the further development of the region is not possible. The authors tried to substantiate the priority directions of the development of the communication system of the Arctic region with the aim to ensure continuous mobile access to strategically significant resources of the region in the current economic and geopolitical tendencies. The article proves that the main task of developing the Arctic should be to ensure the sustainable development of the Arctic region, which can not be achieved without the formation of an adequate level of a system of transport communications which meets the set goals and objectives of the development of the territories. Limited resources with a significant amount of required initial capital investment require an informed choice of priority investment areas, “points of growth” of the system of communications formed. The main conclusion is that the provision of operational access to the strategic resources of the Arctic is impossible without further development of the transport communications system in the region, and first of all the marine transport infrastructure (in particular, the Northern Sea route). At the same time, the impact of the redistribution of traffic flows on various aspects of the region's livelihoods, including the labor market and the social sphere, requires a separate study.

scholarly journals Just in time: Will Putin's revitalized Northern Sea Route reorder global shipping?

2021 ◽  
Vol 09 (01) ◽  
Author(s):  
Thomas E. Rotnem ◽  
Keyword(s):  
Fossil Fuel ◽  
Arctic Region ◽  
Mineral Deposits ◽  
Just In Time ◽  
The Novel ◽  
Successful Development ◽  
Northern Sea Route ◽  
World Markets ◽  
Economic Future

This paper examines Russia's Arctic Strategy, in general, and the development of the Northern Sea Route, in particular. The current Russian regime regards the successful development of the Northern Sea Route (NSR) as the linchpin of its Arctic endeavors and the harbinger of Russia's economic future, focusing upon not only creating a faster and cheaper shipping route from Asia to Europe, but also spiriting out to world markets the vast fossil fuel and mineral deposits that lie in Russia's frozen north. After discussing recent factors causing Russia's leaders to invest significant resources in its Arctic region and the novel transportation artery, we then focus upon recent steps made toward building out the NSR. The article concludes with an examination of significant problems plaguing the route's development and provides a tentative assessment of the project's overall soundness.

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