IMPROVING THE METHOD OF OPEN-PIT LIGNITE DEPOSITS DEVELOPMENT IN UKRAINE [PDF]
, 2018 Subject of the research is open-pit mining concerning a full- field industrial development of a number of lignite deposits; feasibility study has been performed for them as for the efficient environmental friendly processing of coal and associated ...
Adamchuk, A.A. +11 more
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Process research and application of axial roof cutting technology of abrasive jet and fracture
Meitan xuebaoThe large area overhanging of thick and hard roof is one of the critical reasons for inducing coal burst. Because of the shortcomings of deep borehole blasting and conventional hydraulic fracturing for the overhanging roof, the axial roof cutting ...
Yongxue XIA +6 more
doaj +1 more source
Study of quasi-distributed optical fiber methane sensors based on laser absorption spectrometry [PDF]
, 2019 The coal industry plays an important role in the economic development of China. With the increase of coal mining year by year, coal mine accidents caused by gas explosion also occur frequently, which poses a serious threat to the life safety of ...
Chang, J. +7 more
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Frontiers in Earth ScienceGob-side entry driving with small coal pillars in extra-thick seams improves resource recovery but is constrained by fractured, low-capacity surrounding rock and large asymmetric deformation.
Xiang Xu +3 more
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THE NIGERIAN COAL CORPORATION: AN EVALUATION OF PRODUCTION PERFORMANCE(1960 1987) [PDF]
COAL WAS DISCOVERED IN NIGERIA IN 1909 AND COAL MINING STARTED WITH A DRIFT MINE AT OGBETE, ENUGU IN 1915. SINCE 1958/59, WHEN COAL PRODUCTION REACHED ITS PEAK, THERE HAS BEEN A PERSISTENT FLUCTUATION IN THE AMOUNT OF COAL PRODUCED IN SUBSEQUENT YEARS ...
DR. GODWIN CHUKWUDUM NWAOBI
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STUDYING THE POSSIBILITY OF USING RED-BROWN CLAY FOR RECLAMATION OF COAL WASTE DUMPS [PDF]
, 2018 The coal mining industry, as the source of the main fuel resource and the main energy resource, has particular importance for Ukraine.
Heilmeier, Hermann +1 more
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Application of satellite radar interferometry (PSInSAR) in analysis of secondary surface deformations in mining areas. Case studies from Czech Republic and Poland [PDF]
, 2018 Secondary deformations are ground movements occurring in areas of ceased underground mining. These are associated with delayed readjustment of rock mass resulting in subsidence, discontinuous deformations (sinks, cracks, etc.) due to destruction of ...
Blachowski, Jan +4 more
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THE CONCEPTUAL FOUNDATION OF HARMONIZATION OF DIMENSIONAL DESIGN SOLUTION WHILE PLANNING AND WORKING OUT OF COAL-GAS DEPOSITS BY UNDERGROUND METHODS [PDF]
, 2018 Following the 25th World Mining Congress in Astana, it is concluded how important the coal mining industry nowadays. There are only a few energy sources that can produce heat and electricity day-and-night. Each source of energy has its own
LAPKO, Victor +4 more
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The evaluation of a risk degree for the process of a brown coal spontaneous ignition on dumps with using of modern numeric methods [PDF]
, 2018 The article is a summary of information about evaluation of a risk degree for a brown coal spontaneous ignition which is realized on the base of a database analysis of information about the development of stative quantities and desorbated gases in the ...
Blata, Jan +4 more
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Energy and precious fuels requirements of fuel alcohol production. Volume 4: Appendices G and H, methanol from coal [PDF]
Coal mine location, mining technology, energy consumption in mining, coal transport, and potential availability of coal are discussed.
Back, G., Reddy, T. S., Weinblatt, H.
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