A method for assessing the risk of rockburst based on coal-rock mechanical properties and In-Situ ground stress

With the increase in mining depth and intensity, dynamic disasters such as rockburst in mines are becoming more severe. Deep resource extraction is characterized by a high in-situ stress geological environment, closely associated with geological dynamic disasters. However, there is currently no quan...

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Bibliographic Details
Published in:Scientific reports 2024-10, Vol.14 (1), p.26073-10, Article 26073
Main Authors: Rong, Hai, Li, Nannan, Cao, Chen, Wang, Yadi, Wei, Shilong, Li, Jincheng, Li, Mingda
Format: Article
Language:English
Subjects:
704/2151/431
704/2151/562
Coal-rock dynamic system
Humanities and Social Sciences
multidisciplinary
Rockburst
Science
Science (multidisciplinary)
Self-weight stress field
Tectonic stress field
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Summary:With the increase in mining depth and intensity, dynamic disasters such as rockburst in mines are becoming more severe. Deep resource extraction is characterized by a high in-situ stress geological environment, closely associated with geological dynamic disasters. However, there is currently no quantitative analysis method for the correlation between the two. In this study, an elastic energy density calculation method is employed, considering the dissipative effect of the self-weight stress field on the tectonic stress field. The remaining energy, referred to as impact energy, is used to classify the risk of coal seam impact, providing a computational method for rapid assessment of impact risk before mining production. The proposed calculation method is compared with 22 mine impact engineering practices in the literature, showing accurate predictions for 21 mines. Since measuring in-situ stress and coal seam physical and mechanical properties is a preliminary work in coal seam extraction, the comprehensive analysis of these data holds significant research and practical value.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-024-76971-0