IMECH-IR  > 非线性力学国家重点实验室
Power-law singularity as a possible catastrophe warning observed in rock experiments
Hao SW(郝圣旺); Rong F(荣峰); Lu MF(陆明富); Wang HY(汪海英); Xia MF(夏蒙棼); Ke FJ(柯孚久); Bai YL(白以龙); Bai, YL (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China.
Source PublicationINTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
2013-06-01
Volume60Pages:253-262
ISSN1365-1609
AbstractThe question which type of signals can be determinately related to catastrophic rupture in heterogeneous brittle media still remains open. Here we report a specific precursor of catastrophic rupture, i.e. a power-law singularity of responses, based on rock experiments. Our experimental observations show that the singularity with power exponent -Β, where Β=0.51±0.10 (mean±s.d.), appears ahead of catastrophic rupture in some rocks, and the singularity does not appear at all for gradual failure. It is indicated that the power-law singularity can emerge well only close to catastrophic rupture and thus it could serve as a specific warning for catastrophic rupture. To address the potential forewarning of imminent catastrophic rupture, a fitting process based on the data before catastrophic rupture was developed to determine the two unknowns related to the occurrence, catastrophe point UF and the power exponent -Βu. It is demonstrated that the power-law singularity appears only in the vicinity of catastrophe, and that the power-law singularity does not occur for gradual failure.
KeywordPower Law Singularity Catastrophic Rupture Precursor Specific Warning Earthquake Forecasting
Subject Area岩体力学和土力学
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000317802000027
Funding OrganizationNational Natural Science Foundation of China [90715001, 11021262, 10572139, 10802073]; National Basic Research Program of China (973 Program) [2007CB814800]; CAS Innovation Program
DepartmentLNM材料的分子/细观统计力学行为
Classification二类/Q2
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/47261
Collection非线性力学国家重点实验室
Corresponding AuthorBai, YL (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Hao SW,Rong F,Lu MF,et al. Power-law singularity as a possible catastrophe warning observed in rock experiments[J]. INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,2013,60:253-262.
APA Hao SW.,Rong F.,Lu MF.,Wang HY.,Xia MF.,...&Bai, YL .(2013).Power-law singularity as a possible catastrophe warning observed in rock experiments.INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES,60,253-262.
MLA Hao SW,et al."Power-law singularity as a possible catastrophe warning observed in rock experiments".INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES 60(2013):253-262.
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