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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F14%3A00437714" target="_blank" >RIV/68145535:_____/14:00437714 - isvavai.cz</a>

Result on the web

<a href="http://mining.archives.pl" target="_blank" >http://mining.archives.pl</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2478/amsc-2014-0079" target="_blank" >10.2478/amsc-2014-0079</a>

Result language

angličtina

Original language name

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

Original language 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 coalseam 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 5MPaup 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.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DH - Mining industry including coal mining and processing

OECD FORD branch

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Project

<a href="/en/project/ED2.1.00%2F03.0082" target="_blank" >ED2.1.00/03.0082: Institute of clean technologies for mining and utilization of raw materials for energy use</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Archives of Mining Sciences

ISSN

0860-7001

e-ISSN

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Volume of the periodical

59

Issue of the periodical within the volume

4

Country of publishing house

PL - POLAND

Number of pages

11

Pages from-to

1129-1138

UT code for WoS article

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EID of the result in the Scopus database

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