Experimental Investigation on the Deformability, Ultrasonic Wave Propagation, and Acoustic Emission of Rock Salt Under Triaxial Compression

doi:10.3390/app9040635

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Experimental Investigation on the Deformability, Ultrasonic Wave Propagation, and Acoustic Emission of Rock Salt Under Triaxial Compression
	Li, Haoran ; Dong, Zhikai ; Ouyang, Zuolin ; Liu, Bo ; Yuan, Wei ; Yin, Hongwu
刊名	APPLIED SCIENCES-BASEL
	2019
卷号	9 期号:4 页码:-
关键词	salt cavern damage ultimate stress energy release ultrasonic wave acoustic emission
DOI	10.3390/app9040635
英文摘要	Ultrasonic waves, which constitute an active testing method, and acoustic emissions (AE), which can be applied as passive testing technology, can reveal rock damage processes in different ways. However, few studies so far have simultaneously adopted both, owing to the limitations of the experimental apparatus. However, the simultaneous use of both methods can improve the experimental efficiency and help to understand the rock damage evolution more comprehensively. In this study, concurrent experiments of ultrasonic waves and AE activities were carried out on rock salt under uniaxial compression, and the deformation characteristics were measured. The fracture process was divided into four stages with individual characteristics: the elastic compression stage, brittle-ductile transition with crack initiation, brittle-ductile transition with damage initiation, and plastic deformation and strain hardening stage. The ultrasonic wave velocity, crack density, ultrasonic wave amplitude, and attenuation coefficient were obtained to evaluate the damage process. The ultrasonic wave amplitude and the attenuation coefficient were recommended as forecast indicators, owing to their sensitivity and operability of measurement. The confining pressure had an inhibitory effect on crack expansion and on the AE activity, and the damage ultimate stress was defined and determined according to the AE activity and energy release characteristics. Four critical strengths of the crack initiation threshold stress, dilatancy boundary stress, short-term strength, and damage ultimate stress of rock salt were determined and then discussed. These results are valuable in evaluating rock damage and guiding the operation of underground salt caverns.
WOS研究方向	Chemistry ; Engineering ; Materials Science ; Physics
语种	英语
WOS记录号	WOS:000460696500021
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/15047]
专题	岩土力学所知识全产出_期刊论文
作者单位	1.Shijiazhuang Tiedao Univ, Struct Hlth Monitoring & Control Inst, Shijiazhuang 050043, Hebei, Peoples R China; 2.Penn State Univ, Dept Energy & Mineral Engn, Ctr G3, University Pk, PA 16802 USA; 3.Penn State Univ, EMS Energy Inst, University Pk, PA 16802 USA; 4.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Li, Haoran,Dong, Zhikai,Ouyang, Zuolin,et al. Experimental Investigation on the Deformability, Ultrasonic Wave Propagation, and Acoustic Emission of Rock Salt Under Triaxial Compression[J]. APPLIED SCIENCES-BASEL,2019,9(4):-.
APA	Li, Haoran,Dong, Zhikai,Ouyang, Zuolin,Liu, Bo,Yuan, Wei,&Yin, Hongwu.(2019).Experimental Investigation on the Deformability, Ultrasonic Wave Propagation, and Acoustic Emission of Rock Salt Under Triaxial Compression.APPLIED SCIENCES-BASEL,9(4),-.
MLA	Li, Haoran,et al."Experimental Investigation on the Deformability, Ultrasonic Wave Propagation, and Acoustic Emission of Rock Salt Under Triaxial Compression".APPLIED SCIENCES-BASEL 9.4(2019):-.