Počet záznamů: 1
Permeability changes of coal cores and briquettes under tri-axial stress conditions
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SYSNO ASEP 0437714 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Permeability changes of coal cores and briquettes under tri-axial stress conditions Tvůrce(i) Wierzbicki, M. (PL)
Konečný, Pavel (UGN-S) RID
Kožušníková, Alena (UGN-S) RIDCelkový počet autorů 3 Zdroj.dok. Archives of Mining Sciences - ISSN 0860-7001
Roč. 59, č. 4 (2014), s. 1129-1138Poč.str. 11 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. PL - Polsko Klíč. slova coal ; gas permeability ; tri-axial stress ; coal briquettes Vědní obor RIV DH - Báňský průmysl vč. těžby a zpracování uhlí CEP ED2.1.00/03.0082 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UGN-S - RVO:68145535 UT WOS 000346591600021 DOI 10.2478/amsc-2014-0079 Anotace 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. Pracoviště Ústav geoniky Kontakt Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Rok sběru 2015 Elektronická adresa http://mining.archives.pl
Počet záznamů: 1