Affiliation:
1. Chair of Applied Geophysics Montanuniversität Leoben Leoben Austria
Abstract
AbstractIn this study, we review the principles of blast array design for vibration reduction and we present a parametric Laplace‐domain model to predict source time functions for mine blasts that accounts for the relation between charge weight and frequency. We developed the model for one of Europe's largest iron ore mines, Mt. Erzberg, Austria, where we repeatedly monitored production blasts with arrays of 80–125 seismic sensors. Our model enables us to simulate not only resonance modes and Doppler shifts but also time‐domain waveforms. We use the normalized cross‐correlation coefficient of observed and synthetic waveforms to calibrate the model. The overall good match of our predictions suggests that our modelling of the source time functions could be used for more advanced predictions of the peak ground velocity, which is essential to designing charge weight distributions in modern mining operations.
Subject
Geochemistry and Petrology,Geophysics
Reference10 articles.
1. Blast vibration control in the presence of delay scatter and random fluctuations between blastholes
2. The spectral control of ground vibration using electronic delay detonators
3. Modelling of blast vibrations
4. Die Grauwackenzone in den Eisenerzer Alpen (Österreich);Schönlaub H.P.;Jahrbuch der Geologischen Bundesanstalt,1982
5. Die Siderit‐Erzlagerstätte Steirischer Erzberg: Eine geowissenschaftliche Studie mit wirtschaftlicher und geschichtlicher Betrachtung;Schulz O.;Archiv für Lagerstättenforschung der Geologischen Bundesanstalt.,1997