Оn the question of rock leaving in worked-out area of coal mines

Bondarenko, Volodymyr; Ruskykh, Vladyslav; Yarkovych, A; Malashkevych, Dmytro

doi:10.15407/mining08.01.019

Cited by 3 publications

(3 citation statements)

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“…The conducted analysis (Bondarenko, Russkih, Yarkovych & Malashkevych, 2014) shows that ash content of coal has a tendency of gradual growth. Thus, over 15 years, this index has increased by 3.8% reaching 40.2% in 2015.…”

Section: Coal Ash Contentmentioning

confidence: 99%

Tendencies of coal industry development in Ukraine

Snihur¹,

Pavlohradvuhillia”²,

Malashkevych³

et al. 2016

Min. miner. depos.

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Purpose. Analysis of the current state and prospects of Ukraine coal industry development until 2020.Methods. Complex analysis of data regarding mine productivity, coal reserves, mine funds as well as coal consumption and electricity generation has been presented in the paper. The studies of statistics related to geological and extraction thickness in longwall faces are discussed.Findings. The current state of Ukraine coal mining industry and prospects of its development for the period until 2020 are considered. The analysis of Ukraine mine fund conditions is carried out. Statistical data of gross coal production at state-maintained and private mines are given. The reasons for low profitability and coal production decline in the country are considered. Results of the research into ash content of extracted coal, formation and accumulation of mine waste are interpreted. The main promising trends of efficient energy resources use and reduction of environmental impact on coal-mining regions are emphasized.Originality. According to the analysis of the current state of coal industry, several options of its further development are formulated. Practical implications.The presented results can be used to evaluate the investment attractiveness of Ukraine coal mining enterprises.

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Section: Coal Ash Contentmentioning

confidence: 99%

Tendencies of coal industry development in Ukraine

Snihur¹,

Pavlohradvuhillia”²,

Malashkevych³

et al. 2016

Min. miner. depos.

Self Cite

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“…Tendencies of the increased amounts of associated rocks mining are observed clearly in the context of mines in Western Donbass. The carried out studies [1] concerning the rock mass ash-content as for the region mines confirm that for the last five years rock output experienced its 2% increase; for the last decade the increase became 6%. In 2015, ash-content of the extracted fuel varied in the context of certain enterprises from 39.1 to 50.6%; on the average, the figure was 44.9%.…”

Section: Introductionmentioning

confidence: 72%

Integrated Evaluation of the Worked-Out Area Partial Backfill Effect of Stress-Strain State of Coal-Bearing Rock Mass

Malashkevych

Sotskov

Medianyk

et al. 2018

SSP

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The paper gives information on the engineering solution concerning the extraction of thin coal seams with partial backfill of the worked-out area. Geomechanical model of coal-bearing rock mass has been substantiated. A technique to carry out computational experiment aimed at the processes of coal-bearing rock mass displacement within a zone of extraction influence has been represented. Curves of rock pressure stress components distribution (i.e. horizontal stresses, vertical stresses, and stress intensity) within the front bearing pressure and worked-out area for traditional methods (if roof is controlled by means of complete rockfall) and for selective mining with partial backfill have been plotted. Relying upon the carried out studies of stress-strain state of coal-bearing rock mass, overall conclusion has been made on the advantage of selective mining with partial backfill from the viewpoint of geomechanics of the rock mass behaviour.

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“…Крім того, на території Західного Донбасу розташовано 11 породних відвалів, з яких діючих -8. За свою діяльність шахтами регіону було вивезено в них понад 40 млн т породи [17,18]. При цьому зі сфери виробництва виведено близько 200 га орних земель, які надмірно забруднюють повітряний басейн і русла річок.…”

Section: рис 4 динаміка зміни середніх показників виймальної та геоunclassified