加卸载条件下含缺陷岩石声发射响应特征研究

doi:10.13722/j.cnki.jrme.2019.0464

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Abstract The rocks with vein defect structure were taken from the Daguangbao landslide，the surface area of vein was counted based on the technology of image recognition，and uniaxial compression and unloading tests were carried. The acoustic emission characteristics of rocks with vein detect under loading and unloading are studied in this paper. The experimental results show that，the loading and unloading stress in the elastic stage generated acoustic emission，and the accumulate counts of acoustic emission increase with the increase of loading and unloading numbers. The area ratio of vein mass has a great influence on the acoustic emission，the bigger the area ratio of vein mass，the acoustic emission of more frequent and dense will produce. The smaller the area ratio of vein mass，the less the number of acoustic emission will occur. The unloading plays an important role in the formation，propagation and fracture of micro-cracks in rocks. In this paper，the characteristics of rock damage and strength degradation caused by the non-compatible deformation of vein defects and rock during the earthquakes are revealed by acoustic emission.

Key words： rock mechanics vein defect acoustic emission non-compatible deformation rock damage strength degradation

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	Articles by authors
	PEI Xiangjun
	ZHU Ling
	CUI Shenghua
	LIANG Yufei

Cite this article:

PEI Xiangjun,ZHU Ling,CUI Shenghua, et al. Experimental study on acoustic emission characteristic of rocks with vein mass[J]. , 2020, 39(S1): 2602-2611.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2019.0464 OR https://rockmech.whrsm.ac.cn/EN/Y2020/V39/IS1/2602

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