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CONTRIBUTION TO THE ISSUES OF THE MINE GAS METHANE OUTPUT IN THE OSTRAVA-KARVINA COALFIELD

Martin Stolarik, Miroslav Pinka, Radovan Kukutsch

First published: 2017-06-20https://doi.org/10.5593/sgem2017/13/s03.021View metrics

Abstract

Ostrava city and Karvina city has a long history of mining. Over time in Ostrava there has been a decline in mining activity. But closed coal mine may be performed in the correct disposal of heavy burden on their surroundings. One of the biggest dangers are the outputs of mine gases. If gas leaks into a confined space, there is an accumulation of gas and may result in an explosion. The article presents two cases of methane explosions, which were noticed in the Ostrava-Karvina coalfield. Such an explosion had a devastating effect especially due to the immediate blast effects. The adverse effects transmitted to the wider neighbourhood by seismic waves propagating through the ground. Also the article presents a study of seismic load in the near zone of the experimental methane explosion in building. In an experimental explosion on test subjects it was found that these adverse effects in the form of vibrations are not completely negligible, whereby the explosion in their characteristics resemble the effects of blasting work. So not only the pressure wave but also the vibration caused by the explosion can cause damage to not only the object itself, giving rise to an explosion, but also to objects in the vicinity.

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Publication details

Title
CONTRIBUTION TO THE ISSUES OF THE MINE GAS METHANE OUTPUT IN THE OSTRAVA-KARVINA COALFIELD
Authors
Martin Stolarik, Miroslav Pinka, Radovan Kukutsch
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Science and Technologies in Geology, Exploration and Mining
Publisher
STEF92 Technology
Year
2017
Pages
157-166
SWS Citekey
Stolarik20173157166
ISSN
1314-2704
ISBN
978-619-7105-00-1
Language
en
Publication type
Conference Paper
Keywords
Mine gasmethane explosionseismic measurement.
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