TY  - JOUR
ID  - epos1250
UR  - http://dx.doi.org/10.1007/s10950-013-9382-3
IS  - 4
A1  - Marcak, Henryk
A1  - Mutke, Grzegorz
N2  - 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.
VL  - 17
TI  - Seismic activation of tectonic stresses by mining
AV  - none
EP  - 1148
Y1  - 2013/08//
PB  - Springer Verlag
JF  - Journal of Seismology
KW  - Mining seismicity
KW  -  Syncline stresses
KW  -  Focal mechanism
KW  -         Reverse fault
SN  - 1383-4649
SP  - 1139
ER  -