About: Permeability changes of coal cores and briquettes under tri-axial stress conditions

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://mining.archives.pl
Description	The paper is dealing with the permeability of coal in triaxial state of stress. The permeability of coal, besides coal’s methane capacity, is the main parameter determining the quantity of methane inflow into underground excavations. The stress in a coal seam is one of the most important factors influencing coal permeability therefore the permeability measurements were performed in tri-axial state of stress. The hydrostatic three-axial state of stress was gradually increased from 5MPa with steps of 5MPa up to a maximum of 30MPa. Nitrogen was applied as a gas medium in all experiments. The results of the permeability measurements of coal cores from the “Zofiówka mine, Poland, and three mines from the Czech Republic are presented in this paper. As a “reference, permeability measurements were also taken for coal briquettes prepared from coal dust with defined porosity. It was confirmed that the decreasing porosity of coal briquettes affects the decreasing permeability. The paper is dealing with the permeability of coal in triaxial state of stress. The permeability of coal, besides coal’s methane capacity, is the main parameter determining the quantity of methane inflow into underground excavations. The stress in a coal seam is one of the most important factors influencing coal permeability therefore the permeability measurements were performed in tri-axial state of stress. The hydrostatic three-axial state of stress was gradually increased from 5MPa with steps of 5MPa up to a maximum of 30MPa. Nitrogen was applied as a gas medium in all experiments. The results of the permeability measurements of coal cores from the “Zofiówka mine, Poland, and three mines from the Czech Republic are presented in this paper. As a “reference, permeability measurements were also taken for coal briquettes prepared from coal dust with defined porosity. It was confirmed that the decreasing porosity of coal briquettes affects the decreasing permeability. (en)
Title	Permeability changes of coal cores and briquettes under tri-axial stress conditions Permeability changes of coal cores and briquettes under tri-axial stress conditions (en)
skos:prefLabel	Permeability changes of coal cores and briquettes under tri-axial stress conditions Permeability changes of coal cores and briquettes under tri-axial stress conditions (en)
skos:notation	RIV/68145535:_____/14:00437714!RIV15-AV0-68145535
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(ED2.1.00/03.0082)
http://linked.open...iv/cisloPeriodika	4
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Konečný, Pavel Kožušníková, Alena
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav geoniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	36223
http://linked.open...ai/riv/idVysledku	RIV/68145535:_____/14:00437714
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	coal; gas permeability; tri-axial stress; coal briquettes (en)
http://linked.open.../riv/klicoveSlovo	coal briquettes tri-axial stress coal gas permeability
http://linked.open...odStatuVydavatele	PL - Polská republika
http://linked.open...ontrolniKodProRIV	[161C8F01D7A3]
http://linked.open...i/riv/nazevZdroje	Archives of Mining Sciences
http://linked.open...in/vavai/riv/obor	DH
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Institute of clean technologies for mining and utilization of raw materials for energy use
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	59
http://linked.open...iv/tvurceVysledku	Konečný, Pavel Kožušníková, Alena Wierzbicki, M.
issn	0860-7001
number of pages	11 (xsd:int)
http://bibframe.org/vocab/doi	10.2478/amsc-2014-0079

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