Marcak, Henryk and Mutke, Grzegorz (2013) Seismic activation of tectonic stresses by mining. Journal of Seismology, 17 (4). pp. 1139-1148. DOI: https://doi.org/10.1007/s10950-013-9382-3
Full text not available from this repository.Abstract
Hard coal mining in the area of the Bytom Syncline (Upper Silesia Coal Basin, Poland) has been associated with the occurrence of high-energy seismic events (up to 109 J; local magnitude up to 4.0), which have been recorded by the local mining seismological network and regional seismological network. It has been noticed that the strongest seismic events occur when the mine longwall alignments coincide with the syncline axis. Data recorded by the improved local seismic network in the Bobrek Mine allow the estimation of the depths of the events’ hypocentres during excavation of longwall panel 3 as it approached the syncline axis. The recorded data were also used to estimate the location of the rupture surface and stress distribution in the seismic focus region. It was concluded that tectonic stresses, particularly horizontal stress components, are essential in the distribution of seismic tremors resulting from reverse faulting. The stresses induced by mining activity are only triggering tectonic deformations. The hypocentres of the strongest seismic events during mining of longwall panel 3/503 were located 300–800 m deeper than the level of coal seam 503.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Mining seismicity, Syncline stresses, Focal mechanism, Reverse fault |
| Subjects: | Region > Poland > Upper Silesia Inducing technology > Underground mining Methodology > Method and procesing |
| Project: | IS-EPOS project > BOBREK MINE: Seismicity linked to longwall mining EPOS-IP > BOBREK MINE: Seismicity linked to longwall mining IS-EPOS project > USCB: Regional seismicity and ground motion associating underground coal mining EPOS-IP > USCB: Regional seismicity and ground motion associating underground coal mining |