Yurii Pylypenko, Iryna Konstantynova, Krzysztof Оzet. Complex spectral-acoustic monitoring of the state of fluid-saturated coal-rock mass

Details

Parent Category: Geo-Technical Mechanics, 2020

Category: Geo-Technical Mechanics, 2020, Issue 154

Geoteh. meh. 2020, 154, 189-200

https://doi.org/10.1051/e3sconf/202016800059

 

COMPLEX SPECTRAL-ACOUSTIC MONITORING OF THE STATE OF FLUID-SATURATED COAL-ROCK MASS

¹Yurii Pylypenko, ¹Iryna Konstantynova, ²Krzysztof Оzet

¹Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine, ²Institute of Innovative Technologies (EMAG)

Language: English

Abstract. Subject of the research is the methods for monitoring properties and state of coal-rock massif. This work is an experimental validation of the studied parameters of acoustic emission occurred during destruction of the roadway roof. Elements of the theory of acoustic emission control, research methods, results and experimental studies of the fluid-saturated rock destruction were studied. In this article, methods of studying and interpreting the results of geophysical observations of the process of the roof  rock stratification and fall at caving of the undermined rocks at a complex stressed state are presented. Biseds, approaches to solving the problems of managing and controlling the dynamics of changes in the stress-strain state of the undermined fluid-saturated coal-rock massif based on factors of autocorrelation between the seismic-acoustic phenomena occurred over time are described. Experimental grounds are given to the complex control methods with determination of the level of disintegration by the Fourier estimation of the amplitude-frequency and amplitude-time spectra.

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