基于岩石破坏模式和畸–体变能关系的岩爆判据研究

doi:10.3724/1000-6915.jrme.2025.0466

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Abstract To address the empirical challenges and insufficient quantification in current rockburst identification methods for deep, high-stress hard rock tunnels, this study proposes an energy-based rockburst criterion grounded in distortional and volumetric energies, accompanied by a corresponding energy-release calculation method and a constitutive failure model. Laboratory rock mechanics tests, combined with acoustic emission (AE) monitoring, were conducted to systematically investigate the evolution of distortional and volumetric energies during compression loading and their intrinsic relationship with rockburst energy release behavior. The results indicate a sharp increase in AE activity as the ratio of distortional to volumetric energy approaches a critical threshold. Furthermore, higher confining pressures significantly suppress AE events, illustrating the inhibitory effect of volumetric energy on brittle failure under elevated confinement. Numerical simulations of tunnel excavation, based on the proposed constitutive model, further reveal the dynamic evolution of energy partitioning and the transitions in failure modes within the surrounding rock during excavation. These findings demonstrate that appropriate support measures can optimize the stress path of the surrounding rock, enhance the proportion of volumetric energy, and shift the failure mode from brittle to ductile, thereby effectively mitigating the risk of rockbursts.

Key words： rock mechanics high geostress tunnel rockburst volumetric strain energy distortional strain energy rockburst energy release

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	Articles by authors
	PAN Yue1
	2
	YANG Chaoshuai3
	HONG Kairong1
	LIU Yongsheng4
	XIE Tao1
	WANG Hua3

Cite this article:

PAN Yue1,2,YANG Chaoshuai3, et al. Rockburst identification based on rock failure modes and the distortional-volumetric strain energy relationship[J]. , 2026, 45(4): 1032-1047.

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https://rockmech.whrsm.ac.cn/EN/10.3724/1000-6915.jrme.2025.0466 OR https://rockmech.whrsm.ac.cn/EN/Y2026/V45/I4/1032

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