Open AccessSeismometric monitoring in the area of the Piekary Śląskie junction of the A1 motorway in terms of recording the vibrations resulting from mining tremors
Author(s) -
J. Kurzeja
Publication year - 2017
Publication title -
journal of sustainable mining
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.623
H-Index - 17
eISSN - 2543-4950
pISSN - 2300-3960
DOI - 10.1016/j.jsm.2017.06.002
Subject(s) - seismogram , coal basin , vibration , attenuation , energy (signal processing) , seismology , range (aeronautics) , geology , coal mining , statistical analysis , ground vibrations , acoustics , geodesy , engineering , statistics , coal , mathematics , physics , optics , aerospace engineering , waste management
This article summarizes two years of observations of ground vibrations induced by mining tremors generated by hard coal mining within the Upper Silesian Coal Basin. Seismograms recorded in seismometric monitoring carried out in the area of the Piekary Śląskie junction of the A1 motorway were analysed. The purpose of the analysis was an attempt to explore a set of records in terms of the so-called attenuation relation. As a result, regression relations of the velocity of ground vibrations were obtained together with their statistical evaluation, in the function of tremor energy and their epicentric distances, divided by the duration of seismograms. The strongest regression dependencies with a determination coefficient of 91% were obtained for the tremors registered from a distance of up to approximately 5.5 km with a wide energy range from 5E4J to 3E8J for recording times longer than 3s. Moreover, the spectrum analysis of recorded seismograms showed that the scope of the maximum frequencies is between 5 Hz and ca. 15 Hz and it was confirmed that high frequency components are attenuated with the distance from the source