Malovichko, D 2012, 'Discrimination of blasts in mine seismology', in Y Potvin (ed.), Deep Mining 2012: Proceedings of the Sixth International Seminar on Deep and High Stress Mining
, Australian Centre for Geomechanics, Perth, pp. 161-172, https://doi.org/10.36487/ACG_rep/1201_11_malovichko
Seismic monitoring systems installed in mines record seismic signals from various dynamic processes – fracturing in rock mass, production and development blasts, impacts and vibration of machinery, etc. It is important to classify the recorded seismic events before doing most kinds of analysis of seismic data. For instance, the assessment of seismic hazard or analysis of rock mass stability requires only events associated with fracturing in rock mass.
A discrimination technique developed in global seismology was adopted for mining environments in order to identify blasts. The technique utilises a set of seismic event characteristics (time of occurrence relative to blasting time, radiation pattern, distribution of seismic energy between low- and high-frequency bands, correlation of the seismic signals with the preceding and succeeding waveforms) and quantifies a probability that a particular event belongs to a population of blasts.
The application of the technique to several mines is discussed.
Anderson, D.N. and Taylor, S.R. (2002) Application of regularized discrimination analysis to regional seismic event identification, Bulletin of the Seismological Society America, Vol. 92, pp. 2391–2399.
Booker, A. and Mitronovas, W. (1964) An application of statistical discrimination to classify seismic events, Bulletin of the Seismological Society America, Vol. 54, pp. 961–971.
Bormann, P. (2002) New Manual of Seismological Observatory Practice, GFZ German Research Centre for Geosciences, Potsdam, version 2002 in two volumes, 1250 p.
Brady, B.H.G. and Brown, E.T. (2005) Rock mechanics for underground mining, Kluwer Academic Publishers, 628 p.
Ford, S.R., Dreger, D.S. and Walter, W.R. (2010) Network Sensitivity Solutions for regional moment-tensor inversions, Bulletin of the Seismological Society America, Vol. 100, pp. 1962–1970.
Mendecki, A. (1997) Seismic monitoring in mines, Chapman and Hall, 262 p.
Taylor, S.R. (1996) Analysis of high-frequency Pg/Lg ratios from NTS explosions and Western U.S. earthquakes, Bulletin of the Seismological Society America, Vol. 86, pp. 1042–1053.