scholarly journals Technological, economic and social aspects of the provision of solid fuels to the Arctic regions of Yakutia

2020 ◽  
Vol 192 ◽  
pp. 03001
Author(s):  
Sergye Tkach ◽  
Natalya Batugina ◽  
Vladimir Gavrilov
Keyword(s):  
Coal Mines ◽  
The Arctic ◽  
Hard Coal ◽  
Small Scale ◽  
Economic Management ◽  
Open Cast Mining ◽  
Arctic Regions ◽  
Coal Deposits ◽  
Important Direction ◽  
Open Cast

The article examines the reasons leading to the increase in the price of fuel and energy resources consumed in the Arctic regions of the Yakutia. The paper studies the conditions for the development of coal deposits in the region. It is shown the lack of open cast mines that meet modern criteria for efficient use of small-scale open mining by quality and logistic accessibility. This article determines that with the minimum level of clogging of the hard coal mined and the stabilization of its quality over time, it is possible to efficiently recycle the fuel without other precombustion measures. In the case of development of brown coal deposits, additional enrichment is required after extraction to improve the level of consumables. The paper stresses that development of local small-scale deposits of coal is important direction to improve energetic safety of arctic regions. It is necessary to select the coal mines most suitable for open-cast mining, as close to consumers and also with the best quality indicators. The use of the specified measures of technological and economic management, administrative regulation and improvement of mechanisms of «northern delivery» make it possible to facilitate the creation and operation of new coal mines in the Arctic zone of Yakutia. In turn, this reduce coal delivery periods, its quantity and quality losses in the supply chain, and improve local fuel and energy complexes.

scholarly journals Issues of providing solid fuel to the Arctic regions of Yakutia and their solutions based on the potential development of the local raw material base

2020 ◽  
Vol 1 (2) ◽  
pp. 123-128
Author(s):  
Vladislav Igorevich FEDOROV ◽  
Keyword(s):  
Supply Chain ◽  
Solid Fuel ◽  
Local Population ◽  
The Arctic ◽  
Material Base ◽  
Fuel Supply ◽  
Remote Areas ◽  
Arctic Regions ◽  
Coal Deposits ◽  
Northern Regions

Relevance. The interest of science and practice in the large-scale development of subarctic and arctic territories, in particular the Russian Far East and Siberia, has sharply increased in the world. Coal enterprises in remote and inaccessible areas of the region in the face of intense inter-fuel competition are faced with the need to comprehensively increase production efficiency. The successful solution of these problems is counteracted by a complex of unfavorable factors, which, compared with the regions of traditional subsoil use, significantly increase the cost of any activity and predetermine high specific energy consumption in conditions of increased risks of various nature. They are most pronounced in the northern regions of the Republic of Sakha (Yakutia) with their extreme natural and climatic conditions, where due to the simultaneous effect of the low level of infrastructure development; very complex logistics; seasonality and discrepancies in the delivery of goods by water and road; scattered across a huge area of a small number of settlements, etc. there is a sharp complication of the conditions for the normal provision of all types of resources used. The priorities here are normal functioning of the local population, improving energy and environmental safety with acceptable economic and social efficiency. Purpose of the work: to substantiate the need and the possibility of adjusting geotechnological solutions when mining coal deposits with open pits of small and ultra-low thickness when they operate as part of local fuel and energy complexes to increase the efficiency and safety of deliveries to remote areas and improve the quality of coal shipped. Method of research. Generalization and analysis of scientific and technical literature. Using the method of analogy the selection of criteria for creation of micro-sections for coal mining in the Arctic regions of Yakutia and the effectiveness of their implementation in the system of providing solid fuel to consumers in hard-to-reach areas were made. Research results. A solid fuel supply scheme is proposed that meets the coal needs of remote areas of Yakutia, which is based on the concept of creating new local small coal mines near consumers to replace the existing expensive, complex and unreliable scheme. A complex of geotechnical criteria and boundary conditions oriented to small coal openings is presented, on the basis of which it is possible to reveal resource-saving, technical and technological capabilities of the chain, economically acceptable and environmentally efficient development of coal deposits. Link optimization can result from the immediate horizontal and vertical integration of small open cuts in the coal supply chain to consumers. Conclusions. The development of local deposits is one of the ways to increase the stability of the solid fuel supply chain to consumers, as well as the energy security of the inaccessible northern regions of Yakutia and support their economic and social development.

scholarly journals Comparison of Methane Control Methods in Polish and Vietnamese Coal Mines

2018 ◽  
Vol 35 ◽  
pp. 01004
Author(s):  
Marek Borowski ◽  
Zbigniew Kuczera
Keyword(s):  
Coal Mining ◽  
Coal Dust ◽  
Coal Mines ◽  
Hard Coal ◽  
Control Methods ◽  
Prevention Measures ◽  
Methane Drainage ◽  
Hazard Control ◽  
Preventive Actions ◽  
Coal Deposits

Methane hazard often occurs in hard coal mines and causes very serious accidents and can be the reason of methane or methane and coal dust explosions. History of coal mining shows that methane released from the rock mass to the longwall area was responsible for numerous mining disasters. The main source of methane are coal deposits because it is autochthonous gas and is closely related with carbonification and forming of coal deposits. Degree of methane saturation in coal deposits depends on numerous factors; mainly on presence or lack of insulating layers in cover deposit that allow or do not on degasification and easily methane outflow into surroundings. Hence in coal mining there are coal deposits that contain only low degree of methane saturation in places where is lack of insulating layers till high in methane coal deposits occurring in insulating claystones or in shales. Conducting mining works in coal deposits of high methane hazard without using of special measures to combat (ventilation, methane drainage) could be impossible. Control of methane hazard depends also on other co-occuring natural dangers for which used preventive actions eliminate methane hazard. Safety in mines excavating coal deposits saturated with methane depends on the correct estimation of methane hazard, drawn up forecasts, conducted observations, hazard control as well as undertaken prevention measures. Methane risk prevention includes identification and control methods of methane hazards as well as means of combating the explosive accumulation of methane in longwall workings. The main preventive actions in underground coal mines are: effective ventilation that prevents forming of methane fuses or placed methane accumulation in headings ventilated by airflow created by main fans and in headings with auxiliary ventilation, methane drainage using drain holes that are drilled from underground headings or from the surface, methanometry control of methane concentration in the air; location of the sensors is defined by law, additional ventilation equipment used in places of lower intensity of ventilation and places where methane is concentrated.

Working conditions and occupational pathology of coal miners in the Arctic

2019 ◽  
pp. 452-457 ◽  
Author(s):  
S. A. Gorbanev ◽  
S. A. Syurin ◽  
N. M. Frolova
Keyword(s):  
Coal Mining ◽  
Working Conditions ◽  
Occupational Diseases ◽  
Climatic Factors ◽  
Coal Mines ◽  
The Arctic ◽  
Morbidity Rate ◽  
Coal Miners ◽  
Increased Risk ◽  
The Impact

Introduction. Due to the impact of adverse working conditions and climate, workers in coal-mining enterprises in the Arctic are at increased risk of occupational diseases (OD).The aim of the study was to study the working conditions, causes, structure and prevalence of occupational diseases in miners of coal mines in the Arctic.Materials and methods. Th e data of social and hygienic monitoring “Working conditions and occupational morbidity” of the population of Vorkuta and Chukotka Autonomous District in 2007–2017 are studied.Results. It was established that in 2007–2017 years, 2,296 ODs were diagnosed for the first time in 1851 coal mines, mainly in the drifters, clearing face miners, repairmen and machinists of mining excavating machines. Most often, the ODs occurred when exposed to the severity of labor, fibrogenic aerosols and hand-arm vibration. The development of professional pathology in 98% of cases was due to design flaws of machines and mechanisms, as well as imperfections of workplaces and technological processes. Diseases of the musculoskeletal system (36.2%), respiratory organs (28.9%) and nervous system (22.5%) prevailed in the structure of professional pathology of miners of coal mines. Among the three most common nosological forms of OD were radiculopathy (32.1%), chronic bronchitis (27.7%) and mono-polyneuropathy (15.4%). In 2017, coal miners in the Arctic had a professional morbidity rate of 2.82 times higher than the national rates for coal mining.Conclusions. To preserve the health of miners of coal mining enterprises, technical measures to improve working conditions and medical interventions aimed at increasing the body’s resistance to the effects of harmful production and climatic factors are necessary.

scholarly journals Innovative Method for Calculating the Break-Even for Multi-Assortment Production

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4213
Author(s):  
Dariusz Fuksa
Keyword(s):  
Coal Mines ◽  
New Method ◽  
Hard Coal ◽  
Customer Demand ◽  
Innovative Method ◽  
The Subject ◽  
Economic Health ◽  
Production Plans ◽  
A Company ◽  
A Current

The subject of the article is a new method that I have developed for calculating a multi-asset break-even for multi-assortment production, extended by a percentage threshold and a current sales ratio (which was missing in previously published methods). The percentage threshold provides unambiguous information about the economic health of a company. As a result, it became possible to use it in practice to evaluate the activities of economic entities (mines) and to perform modelling and optimisation of production plans based on different variants of customer demand scenarios. The publication addresses the complexity of the problem of determining the break-even in multi-assortment production. Moreover, it discusses the practical limitations of previous methods and demonstrates the usefulness of the proposed method on the example of hard coal mines.

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