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Acoustic impedance inversion for geotechnical evaluation in underground coal mining

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Open access
Authors
Hatherly, Peter
Zhou, B.
Peters, T.
Urosevic, Milovan
Date
2008
Type
Conference Paper

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Citation
Hatherly, Peter and Zhou, Binzhong and Peters, Troy and Urosevic, Milovan. 2008. Acoustic impedance inversion for geotechnical evaluation in underground coal mining, in Society of Exploration Geophysicists. (ed), 78th Annual SEG Conference, Nov 9 2008, pp. 3600-3603. Las Vegas, USA: Society of Exploration Geophysics.
Source Title
SEG Las Vegas 2008 Annual Meeting
Source Conference
78th Annual SEG Conference
DOI
Faculty
Department of Exploration Geophysics
Faculty of Science and Engineering
The Western Australian School of Mines
Remarks

Published by the Society of Exploration Geophysicists.

Copyright © 2008 Society of Exploration Geophysicists.

The link to the journal’s home page is: http://segdl.aip.org/geophysics

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Abstract

In underground coal mining, knowledge of the geomechanical properties of the strata surrounding the mining horizons is essential for the prevention of unexpected rock failures that can disrupt production and jeopardize mine safety. Model based acoustic impedance inversion integrates drill hole and seismic information to allow assessment of the geomechanical environment. We demonstrate our approach using results from a 3D and a 2D seismic survey. We introduce a means of converting acoustic impedance to the Geophysical Strata Rating (GSR). The GSR is a rock mass rating scheme that is normally derived from geophysical logging data. When expressed in terms of GSR, acoustic impedances have values that are meaningful to coal mine engineers.