使用小型围岩试件模拟与再现巷道围岩开挖卸荷过程的试验系统

doi:10.13722/j.cnki.jrme.2016.1585

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Abstract In order to realize the simulation of unloading process of roadway excavation in the laboratory and to obtain the innovative monitoring method，a system that use the cylindrical hollow specimen of rock to simulate the unloading path of the excavation of tunnel rock was developed. The system consists mainly of three independent sub-systems：sub-system I：SAM–3000 microcomputer controlled electro-hydraulic servo rock triaxial test system；sub-system II：the loading and unloading chamber of the hollow cylindrical specimen of rock；sub-system III：Acoustic-Acoustic Emission Integrated Testing System. Through the integration and debugging to the software and hardware of the three subsystems，the indoor simulation of the excavation unloading process of the hollow cylindrical specimen(290 mm in height，200 mm in outer diameter and 100 to 150 mm in diameter) were obtained. The preliminary results of the excavation unloading test to the hollow cylindrical specimen of rock show that the system can effectively simulate and reproduce the excavation unloading conditions on the rock surrounding roadway and can effectively simulate the deformation，stress distribution and failure mechanism of the rock surrounding roadway under the condition of excavation unloading.

Key words： rock mechanics hollow cylinder specimen excavation unloading test system acoustic-acoustic emission

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	Articles by authors
	HOU Gongyu
	LI Xiaorui
	ZHANG Zhenduo
	LIANG Hongyao
	ZHANG Jicheng

Cite this article:

HOU Gongyu,LI Xiaorui,ZHANG Zhenduo, et al. Experimental system for simulating excavation unloading process of rock around roadway by using small cylindrical hollow specimen[J]. , 2017, 36(9): 2136-2145.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2016.1585 OR https://rockmech.whrsm.ac.cn/EN/Y2017/V36/I9/2136

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