Abstract
In 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.
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 1325-1337 |
| Seitenumfang | 13 |
| Fachzeitschrift | Geophysical prospecting |
| Jahrgang | 71.2023 |
| Ausgabenummer | 7 |
| Frühes Online-Datum | 17 Mai 2023 |
| DOIs | |
| Publikationsstatus | Veröffentlicht - Sept. 2023 |
Bibliographische Notiz
Funding Information:This research was funded by the European Union's Horizon 2020 research and innovation programme under grant agreement 730294: Sustainable Low Impact Mining (SLIM). Peter Schimek from the mine operator VAE Erzberg provided crucial support for the station deployments and the coordination with the blasters. Hannes Pluch from VAE provided the most up-to-date elevation model of Figure 14. The seismic receivers for the first deployment in 2016 were provided by the Geophysical Instrument Pool Potsdam (GIPP), Germany. Seismic Unix was used for some of the processing, and GMT (Wessel et al., 2019) for most of the graphs. Thoughtful comments and careful review from Deyan Draganov and Tijmen Jan Moser helped to improve this manuscript.
Funding Information:
This research was funded by the European Union's Horizon 2020 research and innovation programme under grant agreement 730294: Sustainable Low Impact Mining (SLIM). Peter Schimek from the mine operator VAE Erzberg provided crucial support for the station deployments and the coordination with the blasters. Hannes Pluch from VAE provided the most up‐to‐date elevation model of Figure 14 . The seismic receivers for the first deployment in 2016 were provided by the Geophysical Instrument Pool Potsdam (GIPP), Germany. Seismic Unix was used for some of the processing, and GMT (Wessel et al., 2019 ) for most of the graphs. Thoughtful comments and careful review from Deyan Draganov and Tijmen Jan Moser helped to improve this manuscript.
Publisher Copyright:
© 2023 The Authors. Geophysical Prospecting published by John Wiley & Sons Ltd on behalf of European Association of Geoscientists & Engineers.