Forecast of tectonic disturbances zones in coal layers

V.A.  Baranov; P.S.  Pashchenko; S.V.  Stefanko

doi:10.24028/gj.v44i5.272332

Authors

V.A. Baranov Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, Ukraine
P.S. Pashchenko Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, Ukraine
S.V. Stefanko Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, Ukraine

DOI:

https://doi.org/10.24028/gj.v44i5.272332

Keywords:

structure, disturbed zones, quasicrystals, coal, dynamic, gas-dynamic and thermal phenomena

Abstract

This paper considers the problem of identifying geological disturbances that are ubiqu-itous in rocks. The purpose of the work is to test the methodology for identifying tectonic faults and their geometric parameters in coal seams. The article presents the results of the analysis of the accumulated information concerning the study of the microstructure of coal — quasicrystals, which are a consequence of tectonic stresses. Their quantitative characteristics are used to predict dynamic and gas-dynamic phenomena in coal mines, disturbed zones and subzones. Employees of the IGTM NAS of Ukraine carried out studies of the structure of coal in the place of the recorded gas-dynamic phenomenon at one of the mines of Donbass; selected, prepared and studied coal samples using optical microscopy; presented the graphical results of the volumetric allocation of plicative disturbance in the outburst zone of the coal seam and the results of measurements of the strength of the coal; determined the relationship between the strength properties of the coal seam and its microstructural features; established the geometric parameters of the plicative disturbance and made a prediction of the development of the disturbance under these conditions. The results obtained show the effectiveness of the applied methodology, allow increasing the safety of mining operations in coal mines, by predicting the development of geological disturbances invisible to the naked eye and preventing gas-dynamic phenomena. The results obtained are further evidence of the confinement of dynamic, gas-dynamic and thermal phenomena to disturbed zones and the existing relevance of their identification by modern methods.

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