Near-field frequency attenuation of vibrations from blasting using a full-field solution

• Published in: E3S web of conferences Vol. 266; p. 7004
• Main Authors: Gómez, S., Sanchidrián, J.A., Segarra, P.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Les Ulis EDP Sciences 01-01-2021
• Subjects: Attenuation; Blasting; Frequency analysis; Near fields; Prediction models; Vibration; Vibrations; Waveforms
• ISSN: 2267-1242; 2555-0403; 2267-1242
• DOI: 10.1051/e3sconf/202126607004

This study analyses the frequency content of vibrations from blasting in the near field using a vibration prediction model called full-field solution (FFS). For that purpose, the frequency content of recorded signals and synthetic waveforms obtained through the FFS using dominant and mean frequencies have been compared and correlated with the geometrical distance to the blastholes. The study shows that the model overestimates the dominant and mean frequencies in the entire frequency domain, which may require tailoring the source function to a lower frequency content. However, it attenuates the frequency content as distance increases. Additionally, the study shows that the mean frequencies may be used as a better estimator of the frequency content than the dominant frequencies.