Rockburst Hazard and Energy Release in Coal in Case of Thermal-Mechanical Coupling

The spontaneous high-temperature conditions in deep mining cause significant changes in one of the factors that determine the risk of rock burst in coal mine roadways. Therefore, based on the test method of the bursting proneness of coal, uniaxial loading tests were conducted on coal specimens under...

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Bibliographic Details
Published inJournal of mining science Vol. 60; no. 2; pp. 286 - 301
Main Authors Fan, Dewei, Wang, Aiwen, Pan, Yishan, Kong, Linghai, Zhao, Shankun, Lv, Kun
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.04.2024
Springer Nature B.V
Subjects
Bursting
Coal
Coal mines
Coal mining
Deep foundations
Disasters
Earth and Environmental Science
Earth Sciences
Energy
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Heating
High temperature
Loading rate
Mechanical properties
Mineral Resources
Physicochemical processes
Physicochemical properties
Rock Fracture
Rockbursts
Rocks
Thermal analysis
fracture mode
coal mass
coal samples
thermal-mechanical coupled loading
bursting proneness and energy release
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Summary:The spontaneous high-temperature conditions in deep mining cause significant changes in one of the factors that determine the risk of rock burst in coal mine roadways. Therefore, based on the test method of the bursting proneness of coal, uniaxial loading tests were conducted on coal specimens under different thermal loads to explore the variations in the bursting proneness and energy release of heated coal, analyze the variations and mechanism controlling the coal skeleton, physicochemical properties, quality, fracture mode evolution, and macrocrack quantity with different loading rates, and calculate and discuss the changes in the critical conditions of a coal–rock system during heating. In summary, the study of the change in bursting energy release caused by the heating of coal can lay the foundation for the engineering-based prevention and control of composite dynamic disasters in deep coal mines.
ISSN:1062-7391
1573-8736
DOI:10.1134/S1062739124020108