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Energies 2016, 9(7), 507; doi:10.3390/en9070507

Study of Coal Burst Source Locations in the Velenje Colliery

1
Faculty of Natural Sciences and Engineering, University of Ljubljana, Aškerčeva Street 12, Ljubljana SI-1000, Slovenia
2
Hydrogeology, Geotechnology, Ecology, Monitoring d.o.o., Zaloška Street 143, Ljubljana SI-1000, Slovenia
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Ivica Ristović
Received: 26 April 2016 / Revised: 31 May 2016 / Accepted: 24 June 2016 / Published: 30 June 2016
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Abstract

The Velenje coal mine (VCM) is situated on the largest Slovenian coal deposit and in one of the thickest layers of coal known in the world. The thickness of the coal layer causes problems for the efficiency of extraction, since the majority of mining operations is within the coal layer. The selected longwall coal mining method with specific geometry, increasing depth of excavations, changes in stress state and naturally given geomechanical properties of rocks induce seismic events. Induced seismic events can be caused by caving processes, blasting or bursts of coal or the surrounding rock. For 2.5D visualization, data of excavations, ash content and calorific value of coal samples, hanging wall and footwall occurrence, subsidence of the surface and coal burst source locations were collected. Data and interpolation methods available in software package Surfer®12 were statistically analyzed and a Kriging (KRG) interpolation method was chosen. As a result 2.5D visualizations of coal bursts source locations with geomechanical properties of coal samples taken at different depth in the coal seam in the VCM were made with data-visualization packages Surfer®12 and Voxler®3. View Full-Text
Keywords: coal burst; mining-induced seismicity; rockburst; Velenje coal mine (VCM) coal burst; mining-induced seismicity; rockburst; Velenje coal mine (VCM)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Vižintin, G.; Kocjančič, M.; Vulić, M. Study of Coal Burst Source Locations in the Velenje Colliery. Energies 2016, 9, 507.

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