Modern experience of low-coal seams underground mining in Ukraine

Petlovanyi, Мykhailo; Lozynskyi, Vasyl; Saik, Pavlo; Sai, Kateryna

doi:10.1016/j.ijmst.2018.05.014

Cited by 49 publications

(39 citation statements)

References 21 publications

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“…Analyzing the obtained results and considered standard technology for vertical mine workings liquidation [3,4,17,18], the following conclusions have been made. The normative technological scheme for vertical mine working liquidation has to be carried out with the use of floor slab panel placed at parent rock level, with subsequent backfilling of the upper part of the shaft and construction of the second-floor slab.…”

Section: The Results Of Visual Examinationmentioning

confidence: 93%

Technological aspects of technogenic disturbance liquidation in the areas of coal-gas deposits development

Medianyk

Черняєв

2018

E3S Web Conf.

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The objective of this work is to develop the technological measures for liquidation of technogenic disturbances that have arisen within the residential areas. Based on the results of geophysical studies, the causes and factors of Earth’s surface caving occurrence that arose in the result of natural-technogenic processes activation in underworked massif and are caused by the soil subsidence under buildings and constructions, have been determined. The solution of the problem was carried out with the use of methods for observing the natural pulsed electromagnetic field of the Earth and electric tomography in the area adjacent to the place of caving. The conclusions about the possible causes of the caving trough formation and its further development have been formulated, as well as the technological scheme for its liquidation have been developed. The developed new technological scheme allows conducting the effective liquidation works in conditions of proximity to the residential buildings and maximally reduces these scopes of works at ecological and protective measures.

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Section: The Results Of Visual Examinationmentioning

confidence: 93%

Technological aspects of technogenic disturbance liquidation in the areas of coal-gas deposits development

Medianyk

Черняєв

2018

E3S Web Conf.

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“…2 наведено дані про приріст потужності шахти «Капітальна». Виконані розрахунки оптимальних значень потужності шахт свідчать про потенційні можливості шахт Державної вугільної компанії (ДВК), які забезпечені значними запасами та мають достатньо високий рівень економічної надійності [34].…”

Section: рисунок 3 приріст потужності шахт від обсягу інвестиційunclassified

State support of stability in Coal-Donbas regions

Mamaikin¹,

Pochepov²,

Fomychova³

et al. 2016

Fiziko-tehničeskie problemy gornogo proizvodstva

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Purpose. To develop a new approach to feasibility assessment mechanism of supporting production facilities of loss-making mines in Donetsk and Dnipropetrovsk regions. Methods. To solve the objective set, a complex approach was used including assessment of enterprise investment attractiveness, determination of production potential, definition of the ability to switch to a break-even mode. The process for planning ways to save the industrial potential of coal-mining regions may be considered as the reflection of multidimensional space (initial and design values) into the one-dimensional (amount of investment money). Findings. It has been established that on the stage of building a model for managing mine unprofitability decrease processes, it is necessary to overview 8-10 factorial features, which may determine the formation of economic potential, taking into consideration peculiarities of remaining deposit bedding and their quality, as integral assessment of mine potential in terms of (state and non-state) investment perception. The objective set comes down to selection of the minimum number of factors, which would the most adequately reflect the mine internal potential expressed by economic value addedas a consequence of interaction of factors of coal mine economic activities in specific mining, geological and technological conditions. Originality. The academic novelty is that as a complex component of the state of the loss-making mine, it is reasonable to use an indicator of economic reliability, which synthesizes the capacity of links, economic level of technical and economic indicators and the amount of remaining deposits. The latter determine the residual life of the mine, physical content of the proposed indicators is not identical, and it Физико-технические проблемы горного производства 2020, вып. 22 153 is this fact, which allows for their joint use to obtain a more complete estimate than when using any single indicator. Practical implications. Practical significance includes actual assessment of the state of Donbass coal enterprises and determination of marginal break-even indicators, which allowed for the formation of recommendations for attracting financial resources.

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“…Today, in Ukraine, a signi cant amount (~ 50%) of minerals is mined by the underground method, of which almost 90% is extracted from solid coal minerals and about 60% -ore minerals. However, over the last decade, about 60% coal mines in the country were closed because of the exhaustion of industrial reserves (Snihur et al, 2016;Petlovanyi et al, 2018). In order to increase pro tability and reduce the number of closed extraction enterprises, it is possible to introduce additional development technology that will allow for the transformation of substandard reserves into industrial ones.…”

Section: Introductionmentioning

confidence: 99%

Some Aspects of the Compatibility of Mineral Mining Technologies

Dychkovskyi

Vladyko

Maltsev

et al. 2018

MGPB

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Sometimes in mining, it is necessary to combine di erent extracting technologies within one enterprise. So, in this paper, the analysis of scienti c and technical mining operations with combined technologies is carried out, and the search for structure and their operation in the mining enterprise is performed. The processes and technological parameters of mineral extraction by two fundamentally di erent technologies are investigated in detail. Due to the introduction of additional technologies, it is possible to involve sub-standard reserves in the production process, and an algorithm for determining the technological parameters is developed. This algorithm consists of criteria that make it possible to nd compatibility in the work of one or more development technologies while maintaining an e ective level of extraction. To do this, all processes at the enterprise are grouped: by degree of exploration, feasibility and economic e ciency. For each of them, certain coe cients were determined on the example of the operation of two speci c combined technologies: the extraction of uranium ores and coal. For each group of criteria, certain coe cients are identi ed that allow assessing the feasibility of applying technology in their area. Their product is a general coe cient of compatibility, which shows the feasibility of introducing additional technology at the enterprise with the feasibility study. It de nes the amount of funds invested in the development of an enterprise to achieve e cient mineral extraction with combined technologies within one enterprise. This point can be used to predict the grade variability of stockpiles from the origin source and the methodology allows characterizing the iron grades within stockpiles without any extra sampling.

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Modern experience of low-coal seams underground mining in Ukraine

Cited by 49 publications

References 21 publications

Technological aspects of technogenic disturbance liquidation in the areas of coal-gas deposits development

Technological aspects of technogenic disturbance liquidation in the areas of coal-gas deposits development

State support of stability in Coal-Donbas regions

Some Aspects of the Compatibility of Mineral Mining Technologies

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