DBPapers
DOI: 10.5593/SGEM2014/B13/S3.065

RESEARCH ON METHANE EMISSION MECHANISM AND PATTERN IN A LONGWALL COAL FACE AT LIVEZENI COLLIERY

R. I. Moraru, G. B.Babut
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, 497-504 pp

ABSTRACT
Methane emission mechanism and pattern in the underground longwall faces operating in collieries from Petroşani coal basin are extremely complex and yet not elucidated processes. They are highly depending on several geological, technical and mining parameters. Safety reasons are requiring the methane - air mixtures to be adequately diluted and dispersed from underground atmosphere. The use of a methane emission pattern forecast method and knowledge of this variable mechanism should allow the improvement of underground ventilation management. This is the aim of the research study carried out at Livezeni colliery, whose results are highlighted in the paper. Special attention is given to the influence of coal face daily advance rate and the coal cutting system employed in hard coal mining. Graphical correlations between relevant parameters, established for the case study, can be processed by interpolation for other mining blocks within the basin, thus serving to the ultimate goal, to further improve the technical solutions of health and safety provision for all personnel and staff members working in the face.

Keywords: hard coal, methane, emission, flow, longwall face, advance rate