scholarly journals Possibilities of Utilization of Aggregates and Extractive Waste from Hard Coal Mining at Janina Mine in the Process of Reclamation of Open-pit Mines

2016 ◽  
Vol 32 (3) ◽  
pp. 111-134 ◽  
Author(s):  
Beata Klojzy-Karczmarczyk ◽  
Janusz Mazurek ◽  
Krzysztof Paw
Keyword(s):  
Coal Mining ◽  
Sulfur Content ◽  
Water Environment ◽  
Total Content ◽  
Waste Rock ◽  
Open Pit ◽  
Chemical Analyses ◽  
Open Pit Mines ◽  
Physical And Chemical ◽  
Soil And Water

AbstractIn recent years, the economic importance of gangue mined during coal production has changed and it is currently treated more and more often not as waste but as a source of mineral resources for economic use. The overriding objective throughout the reclamation process of open-pit mines associated with the utilization of external material is to make sure that the placement of waste rock on the surface does not cause damage to the environment. The paper presents results of the diagnosis and evaluation of the possibility of filling open-pit mine workings with mining waste or other materials, for example aggregates produced on the basis of gangue, originating in the Janina Mine mining plant (a subsidiary of TAURON Wydobycie S.A.). The study involved aggregate or coal silts from dewatering on the filter presses. The evaluation refers to the legal aspects and takes the requirements of pollution prevention into account, with a particular emphasis on soil, surface water and groundwater. The analysis of the potential impact on the soil and water environment of the project involving reclamation of the open-pit excavation with the use of minerals or waste from coal mining was carried out based on a study of the total content of sulfur and other elements in the samples pierwiastków (As, Cd, Co, Cr, Cu, Hg, Mo, Ni, Pb, V and Zn), as well as of the leaching of components. Moreover, an examination of the coefficient of permeability and porosity was conducted, which allowed the suitability of the material for the construction of insulating layers to be determined. The physical and chemical analyses were conducted on a total of over a dozen samples of waste rock, a byproduct of the enrichment of coal in the Janina Mine plant. The specific studies of the total sulfur content were conducted for the 16 primary samples scattered into 15 fractions each. Moreover, the so-called secondary samples were created, meaning that fine fractions of less than 20 mm and less than 10 mm were rejected. The total content of the selected components was examined for such crafted samples and their concentrations were determined in the leachable form (batch test 1:10). In the case of use of waste rock as an aggregate for quarry reclamation, a comparative analysis was applied to the legal requirements assigned to the mining waste and the quality of soil and water environment. Based on the conducted studies, it has been concluded that the coal silts (filter cakes) are characterized by good insulating properties and can be used for waterproofing objects, especially in the industrial, communications and mining areas. However, coal silts do not meet the quality requirements, mainly due to their slightly increased chlorides content, in addition to being a waste, which in some cases limits the possibility of their use. The best quality parameters were found for the gangue from the Janina Mine (on the basis of which aggregates are manufactured), but deprived of fine fractions. Physical and chemical analyses of the total content of elements in the secondary samples showed that the obtained values are within the allowable ranges determined by appropriate regulations for the vast majority of samples. The limit of 1% was assumed for the sulfur content. The conducted research on the leaching of pollutants indicates that the tested samples do not introduce contaminants exceeding the limit values for the analyzed metals and sulfates. Only single exceedances of the analyzed parameters are observed. The test results allow to conclude that it is possible to obtain a useful product that meets the requirements of environmental protection, but only after the rejection of fine fractions of the waste material.

Remote sensing of mining and haulage equipment arrangement in Russia: A case-study of the coal and iron ore industry

2020 ◽  
pp. 46-49
Author(s):  
I. V. Zenkov ◽  
◽  
A. S. Morin ◽  
V. N. Vokin ◽  
E. V. Kiryushina ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Coal Mining ◽  
Iron Ore ◽  
Remote Sensing Data ◽  
Open Pit ◽  
Mining Machine ◽  
Open Pit Mines ◽  
Maintenance And Repair ◽  
Sensing Data

Remote sensing data have allowed detecting and monitoring of arrangement of mining and haulage machines in open pit mines producing coal and iron ore in Russia. In coal mining, the highest concentration of mining and haulage equipment is revealed in open pit mines in Kuzbass; in the iron ore industry, open pit mines in the Belgorod and Kursk Regions operate 70% of the total equipment employed in the mining sector. The authors draw a conclusion on the essentiality of strengthening of in-house mining machine engineering in Russia and on creation of interregional centers for maintenance and repair of mining and haulage equipment.

scholarly journals Coal industry development strategy in domestic and foreign markets

2020 ◽  
pp. 212-217
Author(s):  
Zhaken Kakitaevich GALIEV ◽  
◽  
Nadezhda Valentinovna GALIEVA ◽  
Keyword(s):  
Coal Mining ◽  
Labor Productivity ◽  
Financial Stability ◽  
Significant Proportion ◽  
Coal Industry ◽  
Open Pit ◽  
Special Role ◽  
Open Pit Mines ◽  
Transport Services ◽  
The Cost

Relevance. In the current context, the cost of coal products is growing. Labor productivity in coal mines and open-pit mines is significantly lower than the corresponding indicator in North America and Australia, a significant proportion of unprofitable enterprises, despite the fact that a third of the world’s coal resources and a fifth of the proven reserves are concentrated in the Russian Federation. In these circumstances, the substantiation of the strategic development of the coal industry on the basis of a SWOT analysis is of great importance. Purpose of the study is to substantiate the strategic vision for the development of the coal industry, priorities for the functioning of coal mining enterprises. Research methods are scientific generalization, method of system analysis and analogies. Results. In the course of the study, the possibilities of functioning of coal mining enterprises, threats to the coal industry, strengths and weaknesses of their activities were identified. The ability to function is determined by the presence of huge coal reserves in Russia, the leadership in its production and export, and a significant share of coking coal grades. The identified threats include: a significant decrease in prices on the world market and coal consumption in the domestic market, an increase in the average transportation distance and the risks of introducing environmental restrictions. The weaknesses in the activities of coal mining enterprises, requiring appropriate measures to be taken to liquidate them, come down to the following: increased operating costs, low labor productivity, a significant number of small mines and open-pit mines that hinder the effective development of the industry as a whole. At the same time, the strategy for further development should focus on the strengths of the coal mining enterprises. These include lower capital investments based on conventional fuel, significantly lower than in the oil and gas industry, therefore, during the period of ensuring sustainable development of the economy as a whole, the development of the coal industry will require lower costs, which creates conditions for the development of other related industries, the possibility of introducing an economic mechanism of inter-fuel competition, as well as the effective functioning of the market structure within the “free” oligopoly. Increasing the competitiveness of coal mining enterprises requires the use of accelerated depreciation methods at export-oriented enterprises, the introduction of problem-solving technology at large coal mining enterprises, the establishment of a rational ratio of the used imported and Russian equipment, and the containment of the growth in the cost of railway transport services. The focus on the implementation of the concept of creating a digital industrial enterprise in the industry plays a special role. A number of measures should be taken to improve financial stability. Conclusions. The identified opportunities and threats, as well as the strengths and weaknesses of the activities of coal mining enterprises, serve as the basis for substantiating the “Strategy for the development of the coal industry”, determine promising directions for the future of coal mining enterprises.

scholarly journals Surface Mines of Mining Area Žacléř – Creating and Using of Financial Reserves for Remediation and Reclamation

2018 ◽  
Vol 64 (2) ◽  
pp. 6-11
Author(s):  
Kristýna Honová ◽  
Jiří Mališ
Keyword(s):  
Coal Mining ◽  
Surface Mining ◽  
Mining Area ◽  
Open Pit ◽  
Coal Surface ◽  
Mining Company ◽  
Open Pit Mines ◽  
Surface Mines ◽  
And Control

Abstract Companies engaged in mining are legally obliged to ensure remediation and reclamation of land affected by mining. Creation and use of financial reserves are subject to approval and control of the Mining Authorities. However, the methodology of creating financial reserves is decided by the mining company itself. In the paper, we describe the methods of creating financial reserves of a specific mining company GEMEC Union for remediation and reclamation after coal surface mining. The paper provides chronological comparisons of coal mining in two open pit mines, including the principles for creating and using financial reserves for remediation and reclamation.

Management and engineering solutions to improve stripping equipment efficiency in Chernogorksy open pit mine

2018 ◽  
pp. 36-48
Author(s):  
G. N. Shapovalenko ◽  
S. N. Radionov ◽  
V. V. Gorbunov ◽  
V. A. Khazhiev ◽  
V. Yu. Zalyadnov ◽  
...  
Keyword(s):  
Open Pit Mine ◽  
Open Pit ◽  
High Concentration ◽  
Open Pit Mines ◽  
Blasting Operation ◽  
Internal Dump ◽  
Mining Conditions ◽  
Mining Front ◽  
Comparison Of Equipment

Chernogosky open pit mine integrates truck-and-shovel system of mining with overburden rehandling to internal dump with a set of walking excavators for rehandling of overburden to mined-out area of the pit. It is possible to improve efficiency of stripping in the conditions of Chernogorsky OPM by reducing percentage of stripping with more expensive handling system. The relevant research and solutions to this effect are presented in this article. Comparative characterization of mining conditions and parameters of mining systems applied is given for open pit mines Chernogorsky, Turnui, Nazarovsky, Vostochno-Beisky and Izykh. The comparative analysis points at the need to account for difficulty of mining and process sites in comparison of equipment productivity. High concentration of mining machines, which is conditioned by narrow mining front and simultaneous operation of five faces, as well as blasting operation implemented every 1-2 days, are recognized as the main constraints of excavator capacity in mining with direct dumping in Chernogorsky open pit mine. The management and engineering solutions implemented in the mine and resulted in higher efficiency of draglines are described.

MECHANICAL/HYDRAULIC ENGINEERING IN RECLAMATION OF OPEN PIT MINES

2018 ◽  
Vol 5 ◽  
pp. 59-64
Author(s):  
P.A. Prokhorov ◽  
◽  
Val.V. Sencus ◽  
A.L. Mansurov ◽  
◽  
...  
Keyword(s):  
Hydraulic Engineering ◽  
Open Pit ◽  
Open Pit Mines
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