Predicting time-to-failure in rock extrapolated from secondary creep

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	Predicting time-to-failure in rock extrapolated from secondary creep
	Hao SW(郝圣旺); Zhang BJ; Tian JF; Elsworth D; Hao, SW (reprint author), Yanshan Univ, Sch Civil Engn & Mech, Qinhuangda, Peoples R China.
发表期刊	JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
	2014-03
卷号	119 期号:3 页码:1942-1953
ISSN	2169-9313
摘要	Stress relaxation experiments are reported that culminate in energetic failure in rocks analogous to the loading cycle and subsequent localization or reactivation on brittle faults embedded in an elastic medium. Universally, rapid primary deformation arrests and transitions into a long secondary deformation phase that ultimately accelerates to catastrophic rupture. Primary deformation (u) conforms to Andrade's law as du/dt similar to (t(c) - t(0))(theta) with a standard exponent of 2/3. In the long, and readily observable, secondary phase, the samples both deform and analogously shed load near linearly in time. This stress relaxation rate exhibits a robust power law dependency with time-to-rupture and exhibits the same 2/3 power law exponent observed in the primary phase. Similarly, the brittle strain energy released in the tertiary collapse scales with a normalized secondary stress relaxation rate. Together, these observations suggest a way to predict both the timing of rupture and its energetics from the observed stress (or strain) rate during the secondary relaxation stage.
学科领域	Geochemistry & Geophysics
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000336844700023
项目资助者	This work is supported by National Basic Research Program of China (grant 2013CB834100). We acknowledge useful comments of Editor, Tom Parsons, and two anonymous reviewers.
课题组名称	LNM材料的分子/细观统计力学行为
论文分区	一类
引用统计	被引频次：35[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/48872
专题	非线性力学国家重点实验室
通讯作者	Hao, SW (reprint author), Yanshan Univ, Sch Civil Engn & Mech, Qinhuangda, Peoples R China.
推荐引用方式 GB/T 7714	Hao SW,Zhang BJ,Tian JF,et al. Predicting time-to-failure in rock extrapolated from secondary creep[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2014,119,3,:1942-1953.
APA	Hao SW,Zhang BJ,Tian JF,Elsworth D,&Hao, SW .(2014).Predicting time-to-failure in rock extrapolated from secondary creep.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,119(3),1942-1953.
MLA	Hao SW,et al."Predicting time-to-failure in rock extrapolated from secondary creep".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 119.3(2014):1942-1953.

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