A Novel Application of Strain Energy for Fracturing Process Analysis of Hard Rock Under True Triaxial Compression

doi:10.1007/s00603-019-01868-8

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	A Novel Application of Strain Energy for Fracturing Process Analysis of Hard Rock Under True Triaxial Compression
	Zhang, Yan ; Feng, Xia-Ting ; Zhang, Xiwei ; Wang, Zhaofeng ; Sharifzadeh, Mostafa ; Yang, Chengxiang
刊名	ROCK MECHANICS AND ROCK ENGINEERING
	2019
卷号	52 期号:11 页码:4257-4272
关键词	Strain energy Energy evolution True triaxial compression Fracturing process Hard rock
ISSN号	0723-2632
DOI	10.1007/s00603-019-01868-8
英文摘要	Energy principles, which can favorably explain the complete rock failure process, are one of the most reliable analysis approaches in rock mechanics and engineering. In this study, a strain energy approach under true triaxial compression (TTC) is proposed. On this basis, the energy evolution characteristics and variations of different failure behavior types (Class I, Class II and ductile failure) under TTC are analyzed. The variations of the strain energy characteristics of Beishan granite with sigma(2) and sigma(3) under TTC are studied. The results indicate that the total strain energy U and the elastic strain energy U-e of Beishan granite increase with the increasing sigma(2) or sigma(3). The dissipated strain energy U-d rapidly increases when the value of epsilon(1)/epsilon(1peak) is approximately 0.6-0.8. The influence of sigma(3) on the rock failure mode and energy evolution characteristics is greater than that of sigma(2). In highly brittle rocks, the tensile cracking of the rock microstructure is dominant, and the rock has a high strain energy storage capacity and a low strain energy dissipation capacity. The cumulative acoustic emission (AE) count rate curve shows the same trend as the total dissipated strain energy U-d curve. The research results show that the proposed strain energy analysis method for TTC can explain the macroscopic failure behaviors, microscopic failure mechanism and AE characteristics of Beishan granite under TTC, thereby providing new ideas and methods for investigating the behaviors of deep underground hard rock.
WOS研究方向	Engineering ; Geology
语种	英语
WOS记录号	WOS:000495357100006
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/14827]
专题	岩土力学所知识全产出_期刊论文
作者单位	1.Northeastern Univ, Minist Educ Safe Min Deep Met Mines, Key Lab, Shenyang 110819, Liaoning, Peoples R China; 2.Curtin Univ, WASM MECE, Dept Min Engn, Kalgoorlie, Australia 3.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	Zhang, Yan,Feng, Xia-Ting,Zhang, Xiwei,et al. A Novel Application of Strain Energy for Fracturing Process Analysis of Hard Rock Under True Triaxial Compression[J]. ROCK MECHANICS AND ROCK ENGINEERING,2019,52(11):4257-4272.
APA	Zhang, Yan,Feng, Xia-Ting,Zhang, Xiwei,Wang, Zhaofeng,Sharifzadeh, Mostafa,&Yang, Chengxiang.(2019).A Novel Application of Strain Energy for Fracturing Process Analysis of Hard Rock Under True Triaxial Compression.ROCK MECHANICS AND ROCK ENGINEERING,52(11),4257-4272.
MLA	Zhang, Yan,et al."A Novel Application of Strain Energy for Fracturing Process Analysis of Hard Rock Under True Triaxial Compression".ROCK MECHANICS AND ROCK ENGINEERING 52.11(2019):4257-4272.