DOI: 10.5593/SGEM2014/B13/S3.044


M. Prodan, C. Lupu, E. Ghicioi, D. Cioclea, A. Szollosi, I. Nalboc
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-09-4 / ISSN 1314-2704, June 19-25, 2014, Book 1, Vol. 3, 329-336 pp

Coal dust, methane and hybrid mixtures explosions are a real consequence of underground coal mining operations. The explosion risk management strategy is based on the reduction of event probability through pro-active hazard awareness and control processes. In order to take the necessary measures to prevent the explosions occurrence and to minimize the associated consequences it is needed to understand the explosion mechanism. Knowing, modernisation and the development of methods for determining the explosion characteristic parameters of underground dangerous mixtures increase the capacity of expertise in explosions, the extension of knowledge about the explosion phenomenon and increase the occupational health and safety by using experimental data obtained in developing the explosion proof protection measures. Determination of explosion parameters plays an important role in the primary phase of explosion risk assessment and conformity assessment stage equipment and protective systems intended for use in potentially explosive atmospheres. In order to assess the risk of explosion and the explosion events expertise is necessary to know the specific explosion parameters for air - flammable substances mixtures. In this paper were determined the maximum explosion pressure pmax, maximum rate of pressure rise (dp/dt) max and explosion severity factor for explosive atmospheres encountered in underground coal mines.

Keywords: explosion, coal dust, hybrid mixtures, maximum explosion pressure, maximum rate of pressure rise