Intensity and nature of seismic impact of Kostomuksha GOK

Authors: Lebedev A. A.

The results of the two-year study into seismic impacts of Kostomuksha GOK (NW part of the Karelian craton) are presented. A brief description of Kostomuksha ore region is given. The possibilities of industrial blasting recording by the Karelian seismic network at various distances from the epicenters are shown. The analysis of the intensity and temporal dynamics of blasting operations in open pits was carried out. That made it possible to assess exposure stability, to develop the main criteria of the impact generated by blasting operations on the geological environment, as well as to provide a foundation for the long-term assessment of regional geodynamics. Induced seismicity prevails in the territory of Karelia, and the main contribution is made by blasting. The question of identifying induced seismic events and separating them from earthquakes is still topical. The plotted graphs show the dependence of the increase in the seismic event magnitude on the total charge. The collected data are classified by open pits and by the type of explosives. A few assumptions were made concerning the intensity of blasting operations. An approach to reducing the negative seismic impact of industrial explosions is presented. Some suggestions are made for the short-term and promising trends in advancement and application of seismic monitoring to assess seismic impact of explosions.

Keywords: blasting operations, geodynamics, magnitude, total charge, induced seismicity, industrial safety, seismic monitoring, short-delay blasting, Karelian craton.
For citation:

Lebedev A. A. Intensity and nature of seismic impact of Kostomuksha GOK. MIAB. Mining Inf. Anal. Bull. 2021;(5—1):142—151. [In Russ]. DOI: 10.25018/0236_1493_2021_51_0_142.

Acknowledgements:

The study was carried out in the framework of the state contract with the Institute of Geology, Karelian Research Center, Russian Academy of Sciences, Topic No. AAAA-A18-118020290086-1.

Issue number: 5
Year: 2021
Page number: 142-151
ISBN: 0236-1493
UDK: 550.348 (470.22)
DOI: 10.25018/0236_1493_2021_51_0_142
Article receipt date: 27.01.2021
Date of review receipt: 24.03.2021
Date of the editorial board′s decision on the article′s publishing: 10.04.2021
About authors:

Lebedev A. A., senior geophysicist, stayxalert@gmail.com; ORCID: https: // orcid.org/00000002-7849-9337, The Institute of Geology of the Karelian Research Centre of the Russian Academy of Sciences, Petrozavodsk, Russia.

For contacts:
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