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Permeability Evolution and Rock Brittle Failure

文献类型：期刊论文

作者Sun, Qiang1; Xue, Lei2; Zhu, Shuyun1
刊名ACTA GEOPHYSICA
出版日期2015-08-01
卷号63期号:4页码:978-999
关键词microfracturing critical information permeability evolution
DOI10.1515/acgeo-2015-0017
文献子类Article
英文摘要This paper reports an experimental study of the evolution of permeability during rock brittle failure and a theoretical analysis of rock critical stress level. It is assumed that the rock is a strain-softening medium whose strength can be described by Weibull's distribution. Based on the two-dimensional renormalization group theory, it is found that the stress level lambda(c) (the ratio of the stress at the critical point to the peak stress) depends mainly on the homogeneity index or shape parameter m in the Weibull's distribution for the rock. Experimental results show that the evolution of permeability is closely related to rock deformation stages: the permeability has a rapid increase with the growth of cracks and their surface areas (i.e., onset of fracture coalescence point), and reaches the maximum at rock failure. Both the experimental and analytical results show that this point of rapid increase in permeability on the permeability-pressure curve corresponds to the critical point on the stress-strain curve; for rock compression, the stress at this point is approximately 80% of the peak strength. Thus, monitoring the evolution of permeability may provide a new means of identifying the critical point of rock brittle fracture.
WOS关键词EARTHQUAKE PREDICTION ; CATACLASTIC FLOW ; STRESS ; DEFORMATION ; TRANSITION ; SANDSTONES ; DILATANCY ; MECHANISM ; PRESSURE ; POROSITY
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000360577300003
资助机构State Basic Research and Development Program of China(2013CB036003) ; State Basic Research and Development Program of China(2013CB036003) ; Priority Academic Program Development of Jiangsu Higher Education Institutions ; Priority Academic Program Development of Jiangsu Higher Education Institutions ; National Science Youth Foundation of China(41102201 ; National Science Youth Foundation of China(41102201 ; China Postdoctoral Science Foundation(2012M520376) ; China Postdoctoral Science Foundation(2012M520376) ; 41302233 ; 41302233 ; 51309222) ; 51309222) ; State Basic Research and Development Program of China(2013CB036003) ; State Basic Research and Development Program of China(2013CB036003) ; Priority Academic Program Development of Jiangsu Higher Education Institutions ; Priority Academic Program Development of Jiangsu Higher Education Institutions ; National Science Youth Foundation of China(41102201 ; National Science Youth Foundation of China(41102201 ; China Postdoctoral Science Foundation(2012M520376) ; China Postdoctoral Science Foundation(2012M520376) ; 41302233 ; 41302233 ; 51309222) ; 51309222)
源URL[http://ir.iggcas.ac.cn/handle/132A11/62282]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
作者单位1.China Univ Min & Technol, Sch Resources & Geosci, Xuzhou, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Qiang,Xue, Lei,Zhu, Shuyun. Permeability Evolution and Rock Brittle Failure[J]. ACTA GEOPHYSICA,2015,63(4):978-999.
APA Sun, Qiang,Xue, Lei,&Zhu, Shuyun.(2015).Permeability Evolution and Rock Brittle Failure.ACTA GEOPHYSICA,63(4),978-999.
MLA Sun, Qiang,et al."Permeability Evolution and Rock Brittle Failure".ACTA GEOPHYSICA 63.4(2015):978-999.

入库方式： OAI收割

来源：地质与地球物理研究所

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