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Updated: Nov 30, 2025

Research and Development of High-performance Explosives
Published on: February 20, 2016
Analysis on the Possibility of Eliminating Interference from Paraseismic Vibration Signals Induced by the Detonation
Józef Pyra1, Maciej Kłaczyński2, Rafał Burdzik3
1Department of Mining Engineering & Occupational Safety, Faculty of Mining & Geoengineering, AGH University of Science and Technology, Mickiewicza 30, 30-059 Cracow, Poland.
Abstract:
This article presents the results of studies on the impact of acoustic waves on geophones and microphones used to measure airblasts carried out in a reverberation chamber. During the tests, a number of test signals were generated, of which two are presented in this article: frequency-modulated sine (sine sweep) waves in the 30-300 Hz range, and the result of detonating 3 g of pyrotechnic material inside the chamber. Then, based on the short-time Fourier transform, the spectral subtraction method was used to remove unwanted disruption interfering with the recorded signal. Using MATLAB software, a program was written that was calibrated and adapted to the specifics of the measuring equipment based on the collected test results. As a result, it was possible to clean the signals of interference and obtain a vibration signal propagated by the substrate. The results are based on signals registered in the laboratory and made in field conditions during the detonation of explosive materials.
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