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Research on rockburst prevention systems based on the attenuation law of coal and rock vibration wave energy
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SYSNO ASEP 0601225 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Research on rockburst prevention systems based on the attenuation law of coal and rock vibration wave energy Author(s) Rong, Hai (UGN-S)
Wang, Z. (CN)
Koníček, Petr (UGN-S) RID, ORCID
Pan, L. (CN)
Tang, G. (CN)
Kajzar, Vlastimil (UGN-S) RID, ORCID
Wang, Y. (CN)Number of authors 7 Article number 6452 Source Title Scientific Reports. - : Nature Publishing Group - ISSN 2045-2322
Roč. 14, č. 1 (2024)Number of pages 29 s. Publication form Online - E Language eng - English Country US - United States Keywords energy attenuation ; heterogeneous medium ; rockburst ; numerical simulation ; analytic hierarchy process Subject RIV DH - Mining, incl. Coal Mining OECD category Environmental and geological engineering, geotechnics Method of publishing Open access Institutional support UGN-S - RVO:68145535 UT WOS 001187726300082 EID SCOPUS 85187920111 DOI https://doi.org/10.1038/s41598-024-57258-w Annotation During the coal and rock mass fracture process, elastic properties are released and vibration waves are radiated outward. The energy attenuation characteristics of these waves can describe the cumulative damage and elastic energy accumulation of the mass. To investigate coal and rock mass failure characteristics and energy attenuation rules during rockburst, numerical simulation and laboratory testing were utilized to study the energy transfer laws under various parameters. Six variables, including elastic modulus, Poisson’s ratio, bulk density, cohesion, internal friction angle, and void ratio, were selected to simulate the rockburst energy release process under different parameter combinations by adding surface pressure to the model. The coal and rock mass energy attenuation coefficient was obtained by fitting the node energy straight line using the least squares method. The six variables’ influence on vibration wave energy transfer was obtained using analytic hierarchy process program written in MATLAB, and a comprehensive calculation formula was proposed. Using the energy attenuation coefficient, the rock layer energy diffusion distance was calculated and compared with the roof collapse rock layer step distance, resulting in the roof rock layer cutting distance determination. By roof rock strata precutting, rockburst occurrence can be prevented, ensuring safe and efficient coal mine production. Workplace Institute of Geonics Contact Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Year of Publishing 2025 Electronic address https://www.nature.com/articles/s41598-024-57258-w
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