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Investigation of the stress-strain state of mine shaft support under long-term operation

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Category: Content №2 2025

Last Updated on 26 April 2025

Published on 30 November -0001

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Authors:

V.P.Shchokin, orcid.org/0000-0001-9709-1831, Kryvyi Rih National University, Kryvyi Rih, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

V.V.Tkachuk*, orcid.org/0000-0002-5879-5147, Kryvyi Rih National University, Kryvyi Rih, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

O.V.Aniskov, orcid.org/0000-0001-9605-2304, Kryvyi Rih National University, Kryvyi Rih, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

O.V.Kliatskyi, orcid.org/0009-0002-4814-0160, Kryvyi Rih National University, Kryvyi Rih, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

* Corresponding author e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

повний текст / full article

Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2025, (2): 079 - 087

https://doi.org/10.33271/nvngu/2025-2/079

Abstract:

Purpose. To develop a methodology for assessing and predicting the stress-strain state of mine shaft support under long-term operation to ensure its long-term stability and safety.

Methodology. The research was conducted using an integrated approach that included measurements of the natural pulse electromagnetic field of the Earth (NPEMFE) in the ranges of 2‒7 and 7‒50 kHz, statistical analysis using Pearson’s correlation coefficient and Student’s t-test. The monitoring was carried out at 117 levels of the mine shaft with different measurement steps and the use of three antennas to register signals in different spatial coordinates.

Findings. A strong correlation was found between the level number and signal intensity in both frequency ranges (correlation coefficients 0.989 and 0.993), confirmed by statistically significant Student’s t-test results. High-stress zones were identified at levels 70‒90 and 96‒117, where significant increases in signal intensity were observed, indicating potential risks of support deformation.

Originality. For the first time, a comprehensive approach to assessing the stress-strain state of a mine shaft using frequency-spatial analysis of NPEMFE signals has been proposed, enabling the detection of not only high-stress zones but also areas of potential water saturation in structures.

Practical value. The developed methodology provides non-destructive testing of mine shaft support conditions without drilling operations, reducing operational costs and improving underground safety. The research results enable timely planning of repair works and prevention of emergency situations, ensuring stable operation of mine shafts.

Keywords: stress-strain state, mine shaft support, rock pressure

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