Abstract
The stiffness theory of rockburst plays a crucial role in understanding and preventing rockburst events. This theory evaluates the severity of rockbursts through the difference in stiffness. As a fundamental theory, many new theories have emerged from the stiffness theory, and its applications in mines and deep tunnels are diverse. In this paper, we provide a systematic review of the development process, application status, and application field of rockburst stiffness theory from the perspective of theoretical derivation, laboratory testing, and field application. We also identify key and difficult problems in stiffness theory, such as the determination method of stiffness, the influence of post-peak slope, and the study of rockburst criteria. In addition, based on the existing issues related to stiffness determination, exploration of stiffness changes during rockburst development, and low adaptability in predicting rockburst intensity, we propose the influence of the blasting body-surrounding rock stiffness on the spatial-temporal characteristics, intensity, and mechanism of rockburst, dynamic variable stiffness tests, and stiffness theoretical criteria for determining the rockburst intensity as areas for further research on the stiffness theory of rockburst.
摘要
岩爆刚度理论基于刚度差判断岩爆的剧烈程度, 在认识和防控岩爆方面有着至关重要的作用。 刚度理论作为基础理论, 广泛应用于矿山和深埋隧道等岩石力学领域, 并以此延伸, 形成了许多新型 理论。本文从理论推导、室内试验以及现场应用多角度系统阐释了岩爆刚度理论的发展历程、应用现 状和应用领域。分析总结了刚度理论中的重难点问题, 着重阐释了刚度确认方法、峰后斜率影响规律 以及岩爆判据研究三方面问题。发现现阶段刚度理论在刚度确定、岩爆孕育过程刚度变化、预测岩爆 等级适应性等方面存在不足。基于此, 提出了岩爆刚度理论需要深度研究的两个方向——针对岩爆烈 度判别的刚度理论判据以及“爆体—围岩”刚度对岩爆时空特征、等级与机制的影响规律。
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XIAO Ya-xun provided the idea and wrote the original draft. FENG Guang-liang supervised the project. ZHAO Tong-bin and YIN Yan-chun performed some investigations. WAN Rong-ji conducted literature review.
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XIAO Ya-xun, WAN Rong-ji, FENG Guang-liang, ZHAO Tong-bin, YIN Yan-chun declare that they have no conflict of interest.
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Foundation item: Project(42172317) supported by the National Natural Science Foundation of China; Project(2021326) supported by the Youth Innovation Promotion Association of Chinese Academy of Sciences
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Xiao, Yx., Wan, Rj., Feng, Gl. et al. Stiffness theory of rockburst: Research progress and trends. J. Cent. South Univ. 30, 4230–4251 (2023). https://doi.org/10.1007/s11771-023-5497-z
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DOI: https://doi.org/10.1007/s11771-023-5497-z