Strain energy evolution characteristics and mechanisms of hard rocks under true triaxial compression

doi:10.1016/j.enggeo.2019.105222

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

	Strain energy evolution characteristics and mechanisms of hard rocks under true triaxial compression
	Zhang, Yan ; Feng, Xia-Ting ; Zhang, Xiwei ; Wang, Zhaofeng ; Sharifzadeh, Mostafa ; Yang, Chengxiang ; Kong, Rui ; Zhao, Jun
刊名	ENGINEERING GEOLOGY
	2019
卷号	260 期号:-页码:-
关键词	Strain energy Energy storage limit Strain energy ratio Strain energy conversion rate Hard rocks True triaxial compression
ISSN号	0013-7952
DOI	10.1016/j.enggeo.2019.105222
英文摘要	The energy evolution processes and mechanisms between three hard rocks are studied using a strain energy analysis method under true triaxial compression (TTC). Using Beishan granite as an example, the change in the energy storage limit U-max(e), strain energy ratio and strain energy conversion rate for different sigma(2) and sigma(3) values is investigated. The research results indicate that within the scope of this study, the energy evolution processes and characteristics are largely similar at pre-peak, and notably different at post-peak. The energy storage limit U-max(e) of the Beishan granite indicates an approximately slow increase with an increasing sigma(2), whereas its mean value shows a favorably linear increase with an increasing sigma(3). The elastic strain energy ratio shows a reverse relationship with that of the dissipated strain energy during rock failure. For an increasing sigma(2), the conversion rates of the total elastic strain energy U-e and the total dissipated strain energy U-d of the Beishan granite demonstrate a poor relationship at both pre- and post-peak. For an increasing sigma(3), the mean values indicate a favorable linear change at both pre- and post-peak. The total strain energy and total elastic energy of the different hard rocks increase with increasing sigma(2) or sigma(3) values at pre-peak, whereas the total dissipated strain energy increases with an increasing sigma(3) and decreases with an increasing sigma(2) at pre-peak. When the external conditions are not considered, the difference in the elastic and plastic deformation capacities, which influence the energy difference in different rocks, is influenced by the mineral compositions and microstructures of the different rocks.
WOS研究方向	Engineering ; Geology
语种	英语
WOS记录号	WOS:000495469800012
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/14859]
专题	岩土力学所知识全产出_期刊论文
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China; 2.Northeastern Univ, Minist Educ Safe Min Deep Met Mines, Key Lab, Shenyang 110819, Liaoning, Peoples R China; 3.Curtin Univ, Dept Min Engn, WASM MECE, Kalgoorlie, Australia
推荐引用方式 GB/T 7714	Zhang, Yan,Feng, Xia-Ting,Zhang, Xiwei,et al. Strain energy evolution characteristics and mechanisms of hard rocks under true triaxial compression[J]. ENGINEERING GEOLOGY,2019,260(-):-.
APA	Zhang, Yan.,Feng, Xia-Ting.,Zhang, Xiwei.,Wang, Zhaofeng.,Sharifzadeh, Mostafa.,...&Zhao, Jun.(2019).Strain energy evolution characteristics and mechanisms of hard rocks under true triaxial compression.ENGINEERING GEOLOGY,260(-),-.
MLA	Zhang, Yan,et al."Strain energy evolution characteristics and mechanisms of hard rocks under true triaxial compression".ENGINEERING GEOLOGY 260.-(2019):-.