Application of Selected Analytical and Empirical Methods to Determine the Causes of a Rock Burst Incident Recorded in a Polish Mine
P. Litwa, G. Merta
Central Mining Institute, Katowice, Poland
Keywords: natural hazards, occupational safety, rock burst, rock burst assessment methods
Abstract
The paper concerns an analysis of the causes of the rock burst that occurred in 2019 in one of the underground hard coal mines in the Upper Silesian Coal Basin (Poland). This incident occurred in the area of an active longwall with complex mining and geological conditions. The operation was linked to natural hazards, with seismic (rock burst) and methane hazards predominating. The recorded seismic activity in the course of the operation was at a high level. Commonly used methods of assessing the state of the rock burst hazard are characterised by the difficulty in predicting the occurrence of tremors which may result in dangerous incidents (rock bursts or relaxation). There is therefore a need to constantly improve methods of forecasting the state of such hazards. The paper presents selected results of the applied analytical and empirical methods, which made it possible to determine the causes of the rock burst and to determine the principles of further exploitation in the area covered by the study.
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