Statistical Characterization of the Mechanical Parameters of Intact Rock Under Triaxial Compression: An Experimental Proof of the Jinping Marble

doi:10.1007/s00603-016-1054-5

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	Statistical Characterization of the Mechanical Parameters of Intact Rock Under Triaxial Compression: An Experimental Proof of the Jinping Marble
	Feng, Xia-Ting; Jiang, Quan; Zhong, Shan; Cui, Jie; Song, Leibo
刊名	ROCK MECHANICS AND ROCK ENGINEERING
	2016
卷号	49 期号:12 页码:4631-4646
关键词	Rock material Mechanical parameters Triaxial strength Probability distribution Minimum sample size
ISSN号	0723-2632
DOI	10.1007/s00603-016-1054-5
英文摘要	We investigated the statistical characteristics and probability distribution of the mechanical parameters of natural rock using triaxial compression tests. Twenty cores of Jinping marble were tested under each different levels of confining stress (i.e., 5, 10, 20, 30, and 40 MPa). From these full stress-strain data, we summarized the numerical characteristics and determined the probability distribution form of several important mechanical parameters, including deformational parameters, characteristic strength, characteristic strains, and failure angle. The statistical proofs relating to the mechanical parameters of rock presented new information about the marble's probabilistic distribution characteristics. The normal and log-normal distributions were appropriate for describing random strengths of rock; the coefficients of variation of the peak strengths had no relationship to the confining stress; the only acceptable random distribution for both Young's elastic modulus and Poisson's ratio was the log-normal function; and the cohesive strength had a different probability distribution pattern than the frictional angle. The triaxial tests and statistical analysis also provided experimental evidence for deciding the minimum reliable number of experimental sample and for picking appropriate parameter distributions to use in reliability calculations for rock engineering.
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000389611500004
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3960]
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	Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn
推荐引用方式 GB/T 7714	Feng, Xia-Ting,Jiang, Quan,Zhong, Shan,et al. Statistical Characterization of the Mechanical Parameters of Intact Rock Under Triaxial Compression: An Experimental Proof of the Jinping Marble[J]. ROCK MECHANICS AND ROCK ENGINEERING,2016,49(12):4631-4646.
APA	Feng, Xia-Ting,Jiang, Quan,Zhong, Shan,Cui, Jie,&Song, Leibo.(2016).Statistical Characterization of the Mechanical Parameters of Intact Rock Under Triaxial Compression: An Experimental Proof of the Jinping Marble.ROCK MECHANICS AND ROCK ENGINEERING,49(12),4631-4646.
MLA	Feng, Xia-Ting,et al."Statistical Characterization of the Mechanical Parameters of Intact Rock Under Triaxial Compression: An Experimental Proof of the Jinping Marble".ROCK MECHANICS AND ROCK ENGINEERING 49.12(2016):4631-4646.