Republican Academic Research and Design Institute of Mining Geology, Geomechanics, Geophysics and Surveying—RANIMI, Donetsk, Russia

A. V. Antsiferov, Head of Research, Doctor of Engineering Sciences, Professor
A. A. Glukhov, Deputy Director of Science, Doctor of Engineering Sciences, glukhov1964@yandex.ru

The article describes the functionality and experience of using a software system developed at the RANIMI Institute for processing and analyzing microseismic monitoring results. The software system is designed to study seismic activity of fracture zones near large tectonic faults, as well as to investigate geodynamic processes caused by underground mineral mining. It uses a seismic data base and the procedures that ensure interpretation of seismic records, processing of statistical data and analysis of time history of microseismic oscillations. Examples of application of the software in the analysis of monitoring results are given. The features of seismic records are discussed, in particular, the spectra and spectral ratios of seismograms recorded at the monitoring site in the village of Obyedinenny (Makeevka, Donetsk People’s Republic). It is found that the nature of oscillations at the frequencies less than 2 Hz is homogeneous, and the oscillations have a relatively low amplitude. This is a zone of microseisms from natural sources with an equal contribution of vibrations in the horizontal and vertical planes. The zone with a frequency above 2 Hz is high-amplitude, and a set of peaks corresponds to fluctuations of artificial sources, polarized in the vertical plane. The graphs of the time variation of the maximum frequency response and the modulus of the average amplitude of microseismic oscillations in different frequency ranges are presented. The patterns of the time changes in the characteristics of the recorded oscillations in various frequency ranges are revealed.

The research was carried out at RANIMI Federal State Budgetary Institution within the framework of the state assignment on the topic “Development of a geological and geophysical model for the formation of abnormal methane accumulations in coal mines in zones of dynamic influence of faults. Development of physical and mathematical models of the process of propagation and registration of seismic waves, determination of informative parameters of wave fields, zonality of radonometric activity of faults and gas content of coals” (FRSR-2023-0007).

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