超大尺寸巷道断层滑移型冲击地压试验系统研制与应用

doi:10.3724/1000-6915.jrme.2025.0738

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Abstract To enable experimental simulation of roadway rockburst induced by fault slip, some experimental principles were distilled based on rockburst process analysis. A large-scale experimental system for simulating roadway rockburst induced by fault slip was developed. The key functions and performance of the system were verified, and physical experiments were conducted to reproduce the phenomena of roadway rockburst induced by fault slip, thereby validating the system?s feasibility in simulating such dynamic events. The results show that: (1) A large-scale experimental system for roadway rockburst induced by fault slip is developed, with model dimensions of 3.0 m×1.5 m×1.5 m. The system features three-directional and four-surface loading capabilities, a maximum loading capacity of 20 MPa, and a loading precision of 0.15% F.S. The system has the function of rapid shear slip for faults, applicable to fault dip angles of 45°–90°. The main reaction frame innovatively adopts a concave-convex interlocking structure connection, achieving high overall stiffness (with a deformation of less than 3 mm under full load). (2) A dense array loading technique suitable for ultra-large-scale models under ultra-high stress is proposed. A compact array loader is invented, employing an embedded cylinder chamber and a shared wall design, enabling efficient multi-point and small-area uniform loading within limited space. This significantly improves load transfer effectiveness across large models. (3) A differential top-bottom coordinated loading method is developed to induce fault activation and slip in the model?s movable zone, where the bottom energy storage-loading is used for rapid retraction, and the top energy-storage loading is used for active follow-up loading. The minimum fault slip time can reach 6 s (slip amount 50 mm). (4) A fault-slip rockburst testing method is proposed, in which critical loading of the roadway is followed by fault activation and slip. During the fault slip process, seismic wave propagation is monitored, and two large-scale burst failures occur in the roadway, reproducing the complete chain process of “fault slip to generate seismic wave-wave propagation-seismic wave inducing roadway rockburst”. This study provides a robust experimental platform for investigating the mechanisms and mitigation strategies of roadway rockburst induced by fault slip.

Key words： mining engineering roadway rockburst induced by fault slip experimental system fault activation and slip dense array loading experimental simulation

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	Articles by authors
	KANG Hongpu1
	2
	3*
	GAO Fuqiang1
	2
	3
	WANG Xiaoqing1
	2
	3
	YUAN Guiyang1
	2
	3
	YANG Lei1
	2
	3
	LOU Jinfu1
	2
	3

Cite this article:

KANG Hongpu1,2,3*, et al. Development and application of a large-scale experimental system for roadway rockburst induced by fault slip[J]. , 2026, 45(6): 1599-1614.

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https://rockmech.whrsm.ac.cn/EN/10.3724/1000-6915.jrme.2025.0738 OR https://rockmech.whrsm.ac.cn/EN/Y2026/V45/I6/1599

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