Special issue of the journal «Ugol'» S12-2022

SAFETY

Original Paper

UDC 550.34 © A.A. Dobrynina, V.I. German, V.A. Sankov, 2022

ISSN 0041-5790 (Print) • ISSN 2412-8333 (Online) • Ugol’ – Russian Coal Journal, 2022, № S12, pp. 23-29

DOI: http://dx.doi.org/10.18796/0041-5790-2022-S12-23-29

Title

DISCRIMINATION OF WEAK NATURAL EARTHQUAKES AND INDUSTRIAL EXPLOSIONS

Authors

Dobrynina A.A.1, German V.I.1, Sankov V.A.1

1Institute of the Earth’s crust of Siberian branch of Russian academy of sciences, 664033, Irkutsk, Russian Federation

Authors Information

Dobrynina A.A., PhD PhD (Physics and Mathematics), leading researcher, e-mail: dobrynina@crust.irk.ru

German V.I., PhD(Engineering), Researcher, e-mail: german3v@yandex.ru

Sankov V.A., PhD (Geol.-min.), Vice-director, e-mail: sankov@crust.irk.ru

Abstract

The article focuses on the problem of the discrimination of industrial explosions and natural earthquakes in areas of coal deposits where mining is carried out with imploding works (coal open pit mining). Discrimination of explosions and earthquakes realized on the base of the analysis of seismograms recorded by regional short-period seismic station network. For this aim, different approaches were used: visual analysis (record form, presence of a surface waves, polarities of the first arrivals of P-waves, amplitude ratios of P-, S- and surface waves), filtering of records by a system of narrow-band filters in the range from 0.5 to 20 Hz, calculation of Fourier spectra and spectral-temporal analysis. The results obtained have shown that of the various criteria used to discriminate between earthquakes and explosions for the region of the East Beysky coal field, the most informative is the spectral analysis of seismograms.

Keywords

industrial explosion, earthquake, seismicity, coal field, coal open pit mining, Kuzbass-Khakassia coal area

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Acknowledgements

The research was performed as part of the Integrated Scientific and Technical Programme of the Ministry of Science and Higher Education of the Russian Federation № 075-15-2022-1192 "Processing of coal mill tailings in order to obtain commercial coal concentrate".

For citation

Dobrynina A.A., German V.I. & Sankov V.A. Discrimination of weak natural earthquakes and industrial explosions. Ugol’, 2022, (S12), pp. 23-29. (In Russ.). DOI: 10.18796/0041-5790-2022-S12-23-29.

Paper info

Received November 1, 2022

Reviewed November 15, 2022

Accepted November 30, 2022