scholarly journals Dependence of physico-mechanical characteristics and safety factor of the soil mass on the spacing of vertical pillars of crushed stone

2020 ◽  
Vol 7 (2) ◽  
Author(s):  
Igor Artyushenko
Keyword(s):  
Soil Mass ◽  
Climatic Conditions ◽  
Transport Infrastructure ◽  
Strength Characteristics ◽  
Crushed Stone ◽  
Soil Base ◽  
Railway Line ◽  
The North ◽  
Permafrost Soils ◽  
The Stability

In the design, construction and further operation of communication lines on permafrost soils, the most urgent task is to ensure the reliability of the foundation of the structure. The complexity of construction in the North is due to the presence of permafrost soils in the foundations of buildings, a large number of natural barriers, extreme climatic conditions and lack of infrastructure. In this regard, the choice of structural, technological and organizational solutions for the development of transport infrastructure, including for railways and, first of all, a deformability forecast, measures to ensure the stability of the soil base and the development of rational organizational schemes for their implementation, should be economically feasible, optimal or close to optimal for a particular engineering structure and the region of its location. To ensure stability and sustainability of the soil base of the structure on the Northern Latitudinal Railway section of the new Obskaya-Salekhard railway line, PK 01+50 – PK 06+50, the author proposes a solution to strengthen the base soil with vertical columns of crushed stone. This article shows the effect of vertical columns of crushed stone on the strength characteristics of permafrost soils of the base of the structure. The dependence of the strength characteristics of the soil base on the different steps of the placement of vertical columns of crushed stone is shown. The conclusion is drawn about the most optimal spacing step according to the results of calculations and comparison of various steps of arranging vertical pillars from crushed stone. The results presented in the article are part of the dissertation research I. Artyushenko «Reinforcement of the subgrade base with vertical columns of crushed stone in areas with permafrost soils».

scholarly journals The influence of vertical columns of crushed stone on the cryogenic processes of the soil base of the subgrade

2019 ◽  
Vol 6 (4) ◽  
Author(s):  
Taisiya Shepitko ◽  
Igor Artyushenko
Keyword(s):  
Climatic Conditions ◽  
Oil Fields ◽  
Transport Infrastructure ◽  
Crushed Stone ◽  
Railway Line ◽  
The North ◽  
Permafrost Soils ◽  
The Stability ◽  
Permafrost Thawing ◽  
First Time

Currently, the development of communications in the North is becoming increasingly important for the economy of the Russian Federation. According to the strategy for the development of railway transport until 2030, the construction of the Northern latitudinal passage railway will allow unloading the Trans-Siberian Railway, get transport approaches to the gas and oil fields of the Yamalo-Nenets Autonomous District, and later the Krasnoyarsk Territory, and provide communication with the ports of the Northern Sea Route. The complexity of construction in these regions is due to several reasons: the presence of weak soils in the foundations of structures, the unpredictability of the behavior of frozen soils during freezing-thawing, difficult climatic conditions, and the lack of transport infrastructure. To ensure the stability and sustainability of the subgrade on the Northern latitudinal passage section of the new Obskaya-Salekhard railway line PK 01+50 – PK 06+50, the authors proposed a decision to reinforce the foundation soils with vertical columns of crushed stone. This improvement technology is used in the North for the first time, but it has proven itself in areas with weak foundations. The Northern latitudinal passage section of the new Obskaya-Salekhard railway line PK 01+50 – PK 06+50 is carried out according to the II design principle with the assumption of permafrost thawing. This article has performed and analyzed the modeling of thermophysical processes both with the use of this technology and without it. Conclusions are drawn on the appropriateness of using this technology in the permafrost zone. The results presented in the article are part of the dissertation research I. Artyushenko «Reinforcement of the subgrade base with vertical columns of crushed stone in areas with permafrost soils».

scholarly journals The study of the soil of the base of the Krasnoyarsk territory and the method of strengthening

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Andrey Zaitsev ◽  
Igor Artyushenko
Keyword(s):  
National Economy ◽  
Climatic Conditions ◽  
Transport Infrastructure ◽  
Crushed Stone ◽  
Main Stage ◽  
Economic Relations ◽  
Geographical Society ◽  
The North ◽  
Crushed Granite ◽  
Permafrost Soils

Railways in Russia rightfully occupy one of the key places in the national economy in connection with the geographical conditions, technological features of the economy and the possibility of maximizing the use of the country's transit potential. The problem of modernizing the transport system of Russia, its adaptation to the requirements of the functioning of the national economy and foreign economic relations is becoming increasingly relevant for the regions of the North. As part of the main stage of the expedition “Transpolar Highway”, conducted by the Russian Geographical Society (RGS) together with the Russian University of Transport (RUT) from September 19 2019 to October 15 2019, specialists from the Russian University of Transport examined the territory of the Krasnoyarsk Territory to assess the possibility of designing and building tracks messages in these regions. The lack of transport infrastructure, the unpredictability of the behavior of frozen soils during freezing-thawing, the presence of weak soils in the foundations of structures, difficult climatic conditions, all these factors determine the complexity of construction in these regions. This article describes the determination of the strength characteristics of soils using a dynamic Panda penetrometer-density meter in the field. Conclusions are made about the appropriateness of using these soils in the foundations of structures. Due to the lack of quarries for the production of crushed granite in the Norilsk region and the difficulty of transporting this material, the use of Norilsk metallurgy waste as a replacement for crushed stone was analyzed. The results presented in the article are part of the dissertation research I. Artyushenko "Reinforcement of the subgrade base with vertical columns of crushed stone in areas with permafrost soils"

scholarly journals Base Soil Reinforcement with Vertical Crushed Stone Columns in Cryolithozone

2020 ◽  
Vol 17 (4) ◽  
pp. 68-78
Author(s):  
T. V. Shepitko ◽  
I. A. Artyushenko ◽  
P. G. Dolgov
Keyword(s):  
Strength Properties ◽  
Soil Reinforcement ◽  
Transport Infrastructure ◽  
Strength Characteristics ◽  
Stone Columns ◽  
Crushed Stone ◽  
Use Of Technology ◽  
Permafrost Soils ◽  
Preparatory Stage ◽  
The Stability

Stabilization of permafrost soils of the roadbed base, constructed with assumption of thawing, thanks to improvement of their strength characteristics, requires development and selection of rational structural and technological solutions. The objective of the study was to analyze the effectiveness of use of vertical columns of crushed stone in the permafrost zone and their influence on strength characteristics of the soil base. The study has used general scientific methods, modeling, simulation and comparative analysis. This article proposes a method for improving strength properties of soil of the roadbed base within Obskaya–Salekhard section of the Northern Latitudinal Railway thanks to reinforcement of the roadbed base made with vertical columns of crushed stone, which increases stability of the structure. The proposed basic technological model of construction of the roadbed includes the following main stages: preparatory stage, 1 stage – arrangement of vertical columns of crushed stone and granular subbases, 2 stage – additional compaction with a vibratory roller in case of mismatch of stability of bearing capacity and precipitation of the base to operating standards. The studied object of the transport infrastructure was simulated both without the use of technology for reinforcing it with vertical columns of crushed stone and with its use. The stability coefficient was calculated, and the theoretical surface of embankment collapse was obtained using Midas GTS NX and Plaxis 2D software packages. The stability test of this structure was carried out both in a flat and in a threedimensional setting. The efficiency of using vertical columns of crushed stone to strengthen the embankments constructed on permafrost soils has been shown.

The intensity of the accumulation of residual deformations in the railway track operated in complex natural and climatic conditions

2020 ◽  
pp. 24-34
Author(s):  
L. S. Blazhko ◽  
◽  
E. V. Chernyaev ◽  
V. A. Chernyaeva ◽  
V. V. Ganchits ◽  
...  
Keyword(s):  
Practical Importance ◽  
Strength Properties ◽  
Climatic Conditions ◽  
Railway Track ◽  
The Arctic ◽  
Track Structure ◽  
Arctic Circle ◽  
Railway Line ◽  
The North ◽  
Residual Deformations

Objective: To analyze the results of observations conducted to assess the intensity of the accumulation of residual deformations in the railway track structure operated in severe natural and climatic conditions (the observation site is located above the Arctic Circle). The following were also taken into account: the railway track design (type of intermediate fasteners, track slab, condition of the ballast bed), the railway line scheme, the tonnage handled, the train speed and the axle load. Methods: Mathematical statistics, data processing. Results: The dependences of the railway track deformation and strength properties, including the tonnage handled, have been obtained. Practical importance: The presented observation results of the assessment of the intensity of deformation accumulation in the railway track structure operated in the severe natural and climatic conditions of the North of the Arctic Circle indicate that the use of increased axle load wagons will entail a significant reduction in overhaul life and an increase in the track maintenance operating expenditures

The Relation between Moisture Content and Share Strength of Swelling Soft Rock in the North of Xianfeng Town Open-Cast Coal

2014 ◽  
Vol 971-973 ◽  
pp. 2168-2171
Author(s):  
Qing Shui Liu ◽  
Ying Hui Chen ◽  
Wen Lian Liu
Keyword(s):  
Shear Strength ◽  
Moisture Content ◽  
Soft Rock ◽  
Soil Mass ◽  
Soaking Time ◽  
The North ◽  
Disturbed Soil ◽  
Strength Tests ◽  
The Stability ◽  
Open Cast

We did sorts of shear strength tests in different moisture content conditions with amount of disturbed soil which was collected from the swelling soft rock in the north of xianfeng town open-cast coal. Furthermore, we analyzed the physical relationships between moisture content of the rock-soil mass and shear strength under different soaking time or different moisture content conditions. Finally, we find the shear strength of rock-soil mass drops along with the saturated degree of test specimen doubled and re-doubled. We get a conclusion that soaking of the rock-soil mass has a strong influence on the strength of rock-soil mass. The soaking of groundwater and surface water could soft the rock-soil mass, which plays an important role in controlling the stability of side slope, also in continuing slip deformation.

scholarly journals Impact of carrying capacity on the functioning of the railway network

2020 ◽  
Vol 329 ◽  
pp. 01015
Author(s):  
Alexey Volodin ◽  
Nadezhda Gudkova ◽  
Alexey Astafiev ◽  
Vadim Alferov ◽  
Jozef Majerčák
Keyword(s):  
Carrying Capacity ◽  
Road Transport ◽  
Climatic Conditions ◽  
Transport Infrastructure ◽  
Throughput Capacity ◽  
Traffic Intensity ◽  
Railway Network ◽  
Railway Line ◽  
Passenger Traffic ◽  
Cargo Transportation

Traffic flows associated with the movement of passengers and goods, characterized by traffic intensity, speed, direction and other factors are closely interrelated. The planned traffic intensity of these flows is de-termined by calculating the carrying capacity of the elements of the transport system or links in the delivery chains. The article provides a comprehensive analysis of the throughput capacity of a railway line, rail-way station, railway stations and landside areas, airports, and highways. Calculated dependencies, used to determine the carrying capacity of transport infrastructure facilities, have been carry out. It is shown that the throughput (capacity) of infrastructure facilities is focused, most of all, on the volume of cargo transportation in various industries. The factors that must be take into account when determining the conditions for further de-velopment and increasing the capacity of transport infrastructure elements are noted. All calculation methods are reduced to determining the maxi-mum permissible volume of cargo transportation (in passenger traffic, - passengers) that can be passed (processed) by an infrastructure object per unit (for a certain period) of time in the considered road transport and weather and climatic conditions.

scholarly journals Language Situation in the Far North-East of Russia at the Border of the 20th–21st centuries

2021 ◽  
Vol 6 (2) ◽  
pp. 243-256
Author(s):  
Yulia Yu. Mageramova ◽  
Keyword(s):  
Climatic Conditions ◽  
Transport Infrastructure ◽  
Global Trends ◽  
Scientific Methods ◽  
Semantic Level ◽  
Far North ◽  
North East ◽  
The North ◽  
Magadan Region ◽  
General Scientific

The article describes a specific linguistic situation that developed in the Far North-East of Russia (CWS) using the example of the Magadan region in the late 20th – early 21st centuries. The study used theoretical and empirical general scientific methods (analysis, synthesis, observation and generalization), as well as proper linguistic and sociolinguistic modifications of general scientific methods (quantitative and conceptual analysis, inclusive observation, interviewing native speakers). The main extralinguistic factors, under the influence of which the modern linguistic situation was formed, were determined: harsh climatic conditions, low population density, poorly developed transport infrastructure, remoteness from centers of science and culture, the presence of an autochthonous population, a heterogeneous and unstable composition of inhabitants, etc. It is proved that the combination of the influence of extralinguistic factors with the action of internal linguistic laws has led to the formation of a special linguistic situation on the CWS, which is characterized by the following features: the presence of borrowings from the languages of the indigenous peoples of the North, minimization of dialectal influence, the existence of a particular Kolyma regional dialect functioning in the region. As an illustration, there are examples of lexemes borrowed from the languages of autochthonous ethnic groups in the Russian literary language, in old-time dialects, in the Kolyma region. The article covers the issue of old-timers' dialects that have survived in certain settlements of the Magadan region but do not have an impact on the speech of the Kolyma residents today. The structure of the lexical-semantic level of the Kolyma region is described, it is represented by several types of localisms: semantic, lexical, relative and substratum regionalisms. The conclusion is made about the formation of a special linguistic situation in the Far North-East of Russia, which, on the one hand, is in many respects specific, and on the other hand, corresponds to the global trends in the development of language systems.

scholarly journals Determining the stability of slopes in the conditions of transport infrastructure objects construction

2018 ◽  
Vol 251 ◽  
pp. 02030
Author(s):  
Zaven Ter-Martirosyan ◽  
Vitalii Sidorov
Keyword(s):  
Transport Infrastructure ◽  
Sheet Pile ◽  
The Finite Element Method ◽  
Soil Base ◽  
Vibration Load ◽  
Slip Surfaces ◽  
Stability Of Slopes ◽  
Factors Of Influence ◽  
The Stability ◽  
Construction Works

The article is devoted to the stability determining of the slopes, near which are being carried out works on the construction of the foundation of an automobile overpass. The methods of determining the landslide pressure on the retaining structures, accounting for the technological vibration load on the base, which occurs when the sheet pile is submerged into soil base during the excavation are considered. The analysis of the options for usage the strength undrained characteristics of the soil base under vibration influence on them is made. The risk of construction works near the slope is estimated with the forecasting of the safety coefficients and limiting slip surfaces obtained by the finite element method implemented in the PLAXIS geotechnical software. Many factors of influence on the safety of the slope were taken into account: the staging of construction, the change in the hydrogeological situation, the application of technological and vibrational loads. Based on the results obtained, possible types of work to increase the stability of the slope are presented, and conclusions are drawn on the need for additional studies in the field of undrained properties in case of vibrational loads.

Peculiarities of the course of the postpartum period in domestic reindeer females, its morphophysiology and behavioral reactions in the North-East of Russia (Republic of Sakha)

2020 ◽  
pp. 99-105
Author(s):  
V. Fedorov ◽  
E. Sleptsov ◽  
K. Plemyashov
Keyword(s):  
Postpartum Period ◽  
Reproductive Function ◽  
Complex Problem ◽  
Climatic Conditions ◽  
Taiga Zone ◽  
Behavioral Reactions ◽  
North East ◽  
The North ◽  
The Republic ◽  
Mountain Taiga

A growth in the number of deer and an increase in their productivity are closely related to the solution of the complex problem of reproduction and rational use of deer females. Significant damage to reindeer husbandry is caused by the barrenness of northern domestic deer, the level of which has been quite high in recent years. So, in the Republic of Sakha, on 01.01.2020, the number of domesticated reindeer was 152,068, of which female deer and heifers — 71,818, offspring per 100 females — 59, business yield amounted to 52 fawns per 100 females. The causes of infertility are very diverse, as the natural and climatic conditions of the breeding zones have a significant influence on the reproductive function of reindeer. In Yakutia, the main population of northern domestic deer is bred in mountain taiga and tundra natural-climatic zones, so there are about 55 thousand deer in the mountain taiga zone and more than 65 thousand deer in the tundra zone. In this regard, the study of the peculiarities of the postpartum period course in domestic reindeer females, its morphophysiology, and behavioral reactions depending on the natural and climatic conditions of breeding is of great importance.

ЗУБРЫ НА СЕВЕРЕ РОССИИ — НАСТОЯЩЕЕ И БУДУЩЕЕ

2019 ◽  
pp. 42-44
Author(s):  
I.V. GUSAROV ◽  
V.A. OSTAPENKO ◽  
T.V. NOVIKOVА
Keyword(s):  
Biological Diversity ◽  
Climatic Conditions ◽  
Economic Consequences ◽  
European Bison ◽  
Rare And Endangered Species ◽  
The North ◽  
Rare And Endangered ◽  
Relationship Of ◽  
First Time ◽  
The Relationship

Впервые в мире создана популяция зубров на территории 60 градусов северной широты. В новых климатических условиях разведения и сохранения зубров определены и проанализированы факторы существования вида на севере Европейской части РФ. Выявлены признаки, динамика численности, которые являются составной частью системы, предназначенной для управления биоразнообразием. Интродукция, являясь процессом введения в экосистему нехарактерных для нее видов, может усиливать изменения биоценозов как положительно, так и отрицательно. Насколько быстро и успешно проходит процесс адаптации заселенного вида, и усматривается его влияние на окружающую среду зависит дальнейшее существование зубров и в целом биоразнообразия. В статье обсуждаются вопросы взаимоотношения зубров с другими видами копытных и хозяйственной деятельностью человека, а также дальнейшим использованием зубров в сельскохозяйственном производстве. Пластичность зубров, выявление изменений и их анализ при вселении видов в новые условия обитания необходимы не только для определения развития или деградации биоценозов и в целом экосистемы, но и прогноза социально-экономических последствий интродукции как одного из методов сохранения редких и исчезающих видов фауны.For the first time in the world, a bison population has been created in an area of 60 degrees north latitude. In the new climatic conditions of breeding and preservation of bison, the factors of the species existence in the north of the European part of the Russian Federation are identified and analyzed. The signs, dynamics of abundance, which are an integral part of the system designed to manage biodiversity are identified, since the preservation of biological diversity on the planet is one of the main problems of our time. Introduction, being the process of introducing non-typical species into an ecosystem, can enhance changes in biocenoses, both positively and negatively. The question posing sounds especially when it comes to such a large hoofed animal as the European bison. How quickly and successfully the process of adaptation of the universe takes place and its environmental impact is seen depends on the continued existence of bison and biodiversity in general. The article discusses the relationship of bison with other types of ungulates and human activities, as well as the further use of bison in agricultural production. How these issues will be resolved positively depends on the future of these animals. Thus, the plasticity of bison, the identification of changes and their analysis, with the introduction of species into new habitat conditions is necessary not only to determine the development or degradation of biocenoses and the ecosystem as a whole, but also to predict the socio-economic consequences due to the introduction as one of the methods of preserving rare and endangered species of fauna.

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