长应力波与静力耦合下深部硐室板裂破坏理论及试验研究

doi:10.3724/1000-6915.jrme.2025.0880

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Abstract To validate the proposed theory, a series of similarity model tests were conducted using a self-developed simulation system designed to assess the damage effects of deep underground chambers. This system reproduces the entire process of “in-situ stress loading + excavation unloading + planar shock wave disturbance.”The test results demonstrate that: (1) Under the action of long stress waves, the failure mode of underground chambers aligns with that observed under static loads, characterized by slabbing buckling of the sidewalls rather than roof spalling; (2) The surrounding rock pressure calculated using the quasi-static method closely matches the measured values, confirming the reliability of the proposed model; (3) The plastic zone formed by excavation retains residual bearing capacity even under dynamic disturbances. This work elucidates the slabbing failure mechanism of deep underground chambers subjected to long-wave ground shocks, establishes a calculation method for surrounding rock pressure applicable to this working condition, and provides a theoretical foundation for the design and evaluation of deep underground protective engineering.

Key words： underground engineering underground explosion deep chamber high in-situ stress long stress wave slab buckling

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	Articles by authors
	LI Jie1
	GUO Wei1*
	CHEN Liangyu1
	XU Tianhan1
	JIANG Haiming1
	FAN Pengxian1
	JI Yuguo1
	WANG Houyu2

Cite this article:

LI Jie1,GUO Wei1*,CHEN Liangyu1, et al. Theoretical and experimental of deep engineering slabbing failure mechanism under coupled long stress waves and high in-situ stresse[J]. , 2026, 45(7): 1999-2011.

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https://rockmech.whrsm.ac.cn/EN/10.3724/1000-6915.jrme.2025.0880 OR https://rockmech.whrsm.ac.cn/EN/Y2026/V45/I7/1999

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