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Spatial Distribution of Strain Energy Changes Due to Mining-induced Fault Coseismic Slip: Insights from a Rockburst at the Yuejin Coal Mine, China
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Spatial Distribution of Strain Energy Changes Due to Mining-induced Fault Coseismic Slip: Insights from a Rockburst at the Yuejin Coal Mine, China
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Journal Article
Spatial Distribution of Strain Energy Changes Due to Mining-induced Fault Coseismic Slip: Insights from a Rockburst at the Yuejin Coal Mine, China
2025
Overview
Strain energy change plays a pivotal role in the occurrence of earthquakes and rockbursts during deep mining operations. This study is dedicated to elucidating strain energy changes within the context of longwall mining at the Yuejin Coal Mine, a crucial step for optimizing design and mitigating rockbursts and seismic events. We introduce innovative analytical models to quantify strain energy changes resulting from fault coseismic slip, accounting for both mining-induced additional stress and background stress. Our analysis identifies fault types as critical parameters influencing strain energy variations. Calculations conducted across various scenarios reveal substantial spatial heterogeneity in strain energy distribution, contingent upon fault coseismic slip. Notably, fault slip in close proximity to the working face leads to localized strain energy concentration. To validate our findings, we compare them with monitoring data from the vicinity of the F16 fault at the Yuejin Coal Mine, further allowing us to propose that mining-induced fault coseismic slip constitutes an additional triggering factor for rockbursts or coal bursts, complementing the existing known factors. This underscores the significance of incorporating fault coseismic slip considerations into mining safety protocols, as it has the potential to trigger coal or rockbursts.
Highlights
Uncovered how fault coseismic slip impacts strain energy changes in deep longwall mining.
Developed innovative models to calculate strain energy changes from fault slip, considering mining and background stresses.
Observed significant spatial differences in strain energy distribution, linked to total energy release and fault- slip behavior.
Correlated findings with F16 fault data, identifying mining-induced fault slip as a new cause for rock (coal) bursts.
Publisher
Springer Vienna,Springer Nature B.V
Subject
