An Experimental Study on the Pre-Peak Unloading Damage Evolution of Marble

doi:10.1007/s00603-013-0394-7

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	An Experimental Study on the Pre-Peak Unloading Damage Evolution of Marble
	Xiao, Jian-Qing 1,2; Qiu, Shi-Li 1; Feng, Xia-Ting1 ; Zhang, Chuan-Qing 1
刊名	ROCK MECHANICS AND ROCK ENGINEERING
	2014
卷号	47 期号:2 页码:401-419
关键词	Unloading path test Damage evolution Quantification model Brittle failure
ISSN号	0723-2632
DOI	10.1007/s00603-013-0394-7
英文摘要	The behavior of rock damage evolution under unloading conditions is of utmost importance for the analysis of the stress-induced failure of overstressed rock masses. In this paper, a new experimental approach, the incrementally cyclic loading-unloading pressure test (ICLUP test), is designed to quantify stress-induced micro-fracturing and fracturing under the condition of confining pressure reduction. The experimental results demonstrate that the pre-peak damage and deformation characteristics of marble specimens may be easily quantified by irreversible strains, and two damage stages, namely, the linear steady stage and the nonlinear unsteady stage, which are, respectively, represented as a linear steady rate and a nonlinear unsteady rate of damage evolution, occur along with the increase of unloading damage. The new model is proposed to describe the features of pre-peak unloading damage evolution, and the physical meanings and ranges of its material parameters are explained and analyzed. Furthermore, the evolution of volumetric dilation and elastic parameters which occurs along with the increase of unloading damage is revealed. Also discussed in this paper are the inhomogeneity and initial damage of specimens, as well as related research planned to be performed in the future.
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000331710200007
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3569]
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.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Anyang Normal Univ, Sch Civil Engn & Architecture
推荐引用方式 GB/T 7714	Xiao, Jian-Qing,Qiu, Shi-Li,Feng, Xia-Ting,et al. An Experimental Study on the Pre-Peak Unloading Damage Evolution of Marble[J]. ROCK MECHANICS AND ROCK ENGINEERING,2014,47(2):401-419.
APA	Xiao, Jian-Qing,Qiu, Shi-Li,Feng, Xia-Ting,&Zhang, Chuan-Qing.(2014).An Experimental Study on the Pre-Peak Unloading Damage Evolution of Marble.ROCK MECHANICS AND ROCK ENGINEERING,47(2),401-419.
MLA	Xiao, Jian-Qing,et al."An Experimental Study on the Pre-Peak Unloading Damage Evolution of Marble".ROCK MECHANICS AND ROCK ENGINEERING 47.2(2014):401-419.