Acoustic emission and sorptive deformation induced in coals of various rank by the sorption-desorption of gas |
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Authors: | Zofia Majewska Jerzy Ziętek |
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Affiliation: | (1) Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, Kraków, Poland |
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Abstract: | Simultaneous measurements of acoustic emission (AE) and expansion/contraction of coal samples subjected to gas sorption-desorption processes were conducted on high-and medium-rank coal. The aim of this study was to examine the influence of the coal rank and type of sorbate on measured AE and strain characteristics. The experimental equipment employed in this study consisted of a pressure vessel and associated pressurisation and monitoring units. The arrangement of pressure-vacuum valves permitted the coal sample to be pressurised and depressurised. Carbon-dioxide and methane were used as sorbats. |
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Keywords: | acoustic emission sorption of carbon-dioxide sorption of methane coal swelling coalbed methane carbon-dioxide storage |
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