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Analysis of seismic signatures from gas and dust based explosions at the Lake Lynn Experimental Mine.

Authors
Murphy-MM; Iannacchione-AT; Westman-EC; Chapman-MC
Source
2008 SME Annual Meeting and Exhibit, February 24-27, Salt Lake City, Utah, Preprint 08-009. Littleton, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2008 Feb; :1-7
Link
NIOSHTIC No.
20033467
Abstract
Examination of seismic records during the time interval of the Sago Mine disaster in 2006 revealed a small amplitude signal possibly associated with an event in the mine. More needs to be understood about the seismicity from mine explosions in order to properly interpret critical seismic information. A seismic monitoring system located at NIOSH's Lake Lynn Experimental Mine has monitored experimental gas and dust based explosions and impact tests. The seismic signatures from these different events were analyzed using standard waveform analysis procedures. The magnitude of seismic energy during a gas and dust explosion was found to be more dependent on mine entry geometry and seal behavior rather than on the amount of explosive fuel present. The results suggest a large explosion that's not restricted can generate potentially the same magnitude as a small explosion that is restricted.
Keywords
Mining-industry; Underground-mining; Explosions; Analytical-models; Analytical-processes; Models; Computer-models
Publication Date
20080224
Document Type
Conference/Symposia Proceedings
Fiscal Year
2008
NTIS Accession No.
NTIS Price
NIOSH Division
PRL
Priority Area
Mining
Source Name
2008 SME Annual Meeting and Exhibit, February 24-27, Salt Lake City, Utah, Preprint 08-009
State
PA; VA; UT
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