True Triaxial Experimental Study of Rockbursts Induced By Ramp and Cyclic Dynamic Disturbances

doi:10.1007/s00603-017-1384-y

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	True Triaxial Experimental Study of Rockbursts Induced By Ramp and Cyclic Dynamic Disturbances
	Zhao, Bin 1; Su, Guoshao 1,2; Hu, Lihua 1; Feng, Xiating2 ; Yan, Liubin 1; Zhang, Gangliang 1; Yan, Sizhou 1; Yan, Zhaofu 1
刊名	ROCK MECHANICS AND ROCK ENGINEERING
	2018
卷号	51 期号:4 页码:1027-1045
关键词	Rockburst Dynamic disturbance True triaxial test Damage evolution Experimental test
ISSN号	0723-2632
DOI	10.1007/s00603-017-1384-y
英文摘要	A modified rockburst testing system was utilized to reproduce rockbursts induced by ramp and cyclic dynamic disturbances with a low-intermediate strain rate of 2 x 10(-3)-5 x 10(-3) s(-1) in the laboratory. The experimental results show that both the ramp and cyclic dynamic disturbances play a significant role in inducing rockbursts. In the tests of rockbursts induced by a ramp dynamic disturbance, as the static stress before the dynamic disturbance increases, both the strength of specimens and the kinetic energy of the ejected fragments first increase and then decrease. In the tests of rockbursts induced by a cyclic dynamic disturbance, there exists a rockburst threshold of the static stress and the dynamic disturbance amplitude, and the kinetic energy of the ejected fragments first increases and then decreases as the cyclic dynamic disturbance frequency increases. The main differences between rockbursts induced by ramp dynamic disturbances and those induced by cyclic dynamic disturbances are as follows: the rockburst development process of the former is characterized by an impact failure feature, while that of the latter is characterized by a fatigue failure feature; the damage evolution curve of the specimen of the former has a leap-developing form with a significant catastrophic feature, while that of the latter has an inverted S-shape with a remarkable fatigue damage characteristic; the energy mechanism of the former involves the ramp dynamic disturbance giving extra elastic strain energy to rocks, while that of the latter involves the cyclic dynamic disturbance decreasing the ultimate energy storage capacity of rocks.
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000427802600004
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4251]
专题	岩土力学所知识全产出_期刊论文岩土力学所知识全产出国家重点实验室知识产出_期刊论文
作者单位	1.Guangxi Univ, Sch Civil & Architecture Engn, Key Lab Disaster Prevent & Struct Safety, Minist Educ; 2.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn
推荐引用方式 GB/T 7714	Zhao, Bin,Su, Guoshao,Hu, Lihua,et al. True Triaxial Experimental Study of Rockbursts Induced By Ramp and Cyclic Dynamic Disturbances[J]. ROCK MECHANICS AND ROCK ENGINEERING,2018,51(4):1027-1045.
APA	Zhao, Bin.,Su, Guoshao.,Hu, Lihua.,Feng, Xiating.,Yan, Liubin.,...&Yan, Zhaofu.(2018).True Triaxial Experimental Study of Rockbursts Induced By Ramp and Cyclic Dynamic Disturbances.ROCK MECHANICS AND ROCK ENGINEERING,51(4),1027-1045.
MLA	Zhao, Bin,et al."True Triaxial Experimental Study of Rockbursts Induced By Ramp and Cyclic Dynamic Disturbances".ROCK MECHANICS AND ROCK ENGINEERING 51.4(2018):1027-1045.