深部巷道动静载试验系统研制及初步应用

doi:10.13722/j.cnki.jrme.2021.1236

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Abstract To study the failure mechanism of deep roadway surrounding rock，a novel large-scale physical model test system with dynamic-static loading is developed. This test system consists of main frame，loading box，box moving platform，static loading system，dynamic loading system and roadway reaction device. Complex loading conditions of “high static loading + dynamic disturbance loading” can be realized. Based on the stress evolution process of deep roadway surrounding rock，the verification test is carried out. Test results show that the test system has advantages of compact frame structure，high box mobility and simple system operation. Synchronized and uniform step loading in the axial and lateral directions can be realized by the static loading system. It has the function of long-term load retention. Disturbance of cyclic loading-unloading according to the pre-set waveform can be carried out by the actuator of dynamic loading system. Single impact disturbance can be achieved by the axial drop-weight or lateral pendulum disturbance device. Roadway excavation can be simulated by the roadway reaction device. However，it is not convenient to observe the deformation and failure process of roadway surrounding rock. The further research will be carried out by manual excavation. The stress distribution law of roadway surrounding rock is consistent with the field investigation. Dynamic-static loading environment can be simulated，and large-scale physical similarity model test of deep roadway can be carried out by the test system. It has great significance for studying the dynamic-static load inducing rock burst mechanism，the deformation and failure law of roadway surrounding rock，the “stress relief-support reinforcement” synergetic control theory and the far-field energy attenuation mechanism.

Key words： mining engineering deep roadway test system dynamic-static loading stress disturbance surrounding rock stress similarity simulation

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	TAN Yunliang1
	2
	GUO Weiyao1
	2
	ZHAO Tongbin1
	2
	ZHANG Dongxiao1
	2
	GU Xuebin1
	2
	TAN Yan1
	2

Cite this article:

TAN Yunliang1,2,GUO Weiyao1, et al. Development and application of a novel deep roadway test system with dynamic-static loading[J]. , 2022, 41(8): 1513-1524.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2021.1236 OR https://rockmech.whrsm.ac.cn/EN/Y2022/V41/I8/1513

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