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Transfer learning framework for multi-scale crack type classification with sparse microseismic networks

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International Journal of Mining Science and Technology 2024年第2期34卷 167-178页

作者： Arnold Yuxuan Xie Bing QLi Department of Civil and Environmental Engineering Western UniversityLondon N6A 3K7Canada

Rock fracture mechanisms can be inferred from moment tensors(MT)inverted from microseismic ***,MT can only be inverted for events whose waveforms are acquired across a network of *** is limiting for underground mines where the microseismic stations often lack azimuthal ***,there is a need for a method to invert fracture mechanisms using waveforms acquired by a sparse microseismic ***,we present a novel,multi-scale framework to classify whether a rock crack contracts or dilates based on a single *** framework consists of a deep learning model that is initially trained on 2400000+manually labelled field-scale seismic and microseismic waveforms acquired across 692 *** learning is then applied to fine-tune the model on 300000+MT-labelled labscale acoustic emission waveforms from 39 individual experiments instrumented with different sensor layouts,loading,and rock types in *** optimal model achieves over 86%F-score on unseen waveforms at both the lab-and *** model outperforms existing empirical methods in classification of rock fracture mechanisms monitored by a sparse microseismic *** facilitates rapid assessment of,and early warning against,various rock engineering hazard such as induced earthquakes and rock bursts.

关键词： Multi-scale Fracture processes Microseismic Acoustic emission source mechanism Deep learning

ThesourceparametersandsourcemechanismfortheJanuary5,1998JingyangearthquakewithMS=4.8

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Acta Seismologica Sinica(English Edition) 1998年第6期11卷 114-116页

作者： WEI DONG WANG PING WANG Seismological Bureau of Shaanxi Province, Xi′an 710068, China

ＡｎｅａｒｔｈｑｕａｋｅｗｉｔｈＭＳ＝４．８ｏｃｕｒｅｄｎｅａｒＹｏｎｇｌｅＴｏｗｎｉｎＪｉｎｇｙａｎｇＣｏｕｎｔｙ，ＳｈａａｎｘｉＰｒｏｖｉｎｃｅｏｎＪａｎｕａｒｙ５，１９９８．Ｉｔｓｅｐｉｃｅｎｔｅｒｉｓ３４．５... 详细信息

ＡｎｅａｒｔｈｑｕａｋｅｗｉｔｈＭＳ＝４．８ｏｃｕｒｅｄｎｅａｒＹｏｎｇｌｅＴｏｗｎｉｎＪｉｎｇｙａｎｇＣｏｕｎｔｙ，ＳｈａａｎｘｉＰｒｏｖｉｎｃｅｏｎＪａｎｕａｒｙ５，１９９８．Ｉｔｓｅｐｉｃｅｎｔｅｒｉｓ３４．５°Ｎ，１０８．９°Ｅ，ｏｒｉｇｉｎ...

关键词： Jingyang earthquake digital seismic network source parameters source mechanism

Moment-tensor inversion and decomposition for cracks in thin plates

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Chinese Journal of Aeronautics 2021年第4期34卷 352-359页

作者： Yue KONG Min LI Weimin CHEN Ning LIU Boqi KANG School of Aeronautic Science and Engineering Beihang UniversityBeijing 100083China Institute of Mechanics Chinese Academy of SciencesBeijing 100190China College of Mechanical and Electrical Engineering Beijing University of Chemical TechnologyBeijing 100029China Key Laboratory of Space Utilization Technology and Engineering Center for Space UtilizationChinese Academy of SciencesBeijing 100094China

The knowledge of crack type and dislocation orientation is helpful for the lifetime prediction of thin plates on *** moment-tensor inversion utilizes the Acoustic Emission(AE)signals to detect cracks and the source mechanisms can be interpreted by the decomposition of moment *** the traditional moment-tensor inversion is implemented for the AE sources inside infinite elastic bodies,the inversion needs to be modified for the cracks in thin *** this study,the moment tensors of cracks in thin plates are derived and the inversion equation is provided based on the Green's function of second kind.A method of modifying the moment tensors to adapt to the existing decomposition processes and source-type plots is *** employing the Finite Element Method(FEM),the wave fields generated by the AE sources are *** AE sources continuously changing from pure tensile type(Model I)to shear type(Model II)are achieved in the FE models and the moment tensors are *** the comparison between the reference values and recovered solutions,the source type can be accurately identified in the source-type plot and the applicability of the moment-tensor inversion for cracks in thin plates is confirmed.

关键词： Acoustic emission Fatigue Moment tensor source mechanism Structural health monitoring Thin plate

The fault plane of the 1991,Datong-Yang-gao,Shanxi,China,Ms=5.8 earthquake

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Acta Seismologica Sinica(English Edition) 1994年第1期7卷 167-172页

作者：王鸣张廉强王培德 Institute of Geophysics State Seismological Bureau Beijing China

Ｔｈｅｆａｕｌｔｐｌａｎｅｏｆｔｈｅ１９９１，Ｄａｔｏｎｇ－Ｙａｎｇ－ｇａｏ，Ｓｈａｎｘｉ，Ｃｈｉｎａ，Ｍｓ＝５．８ｅａｒｔｈｑｕａｋｅＭｉｎｇＷＡＮＧ（王鸣），Ｌｉａｎ－ＱｉａｎｇＺＨＡＮＧ（张廉强）ａｎｄＰｅｉ－... 详细信息

Ｔｈｅｆａｕｌｔｐｌａｎｅｏｆｔｈｅ１９９１，Ｄａｔｏｎｇ－Ｙａｎｇ－ｇａｏ，Ｓｈａｎｘｉ，Ｃｈｉｎａ，Ｍｓ＝５．８ｅａｒｔｈｑｕａｋｅＭｉｎｇＷＡＮＧ（王鸣），Ｌｉａｎ－ＱｉａｎｇＺＨＡＮＧ（张廉强）ａｎｄＰｅｉ－ＤｅＷＡＮＧ（王培德）（Ｉｎｓｔｉ...

关键词： Fault Plane Main Shock ACTA SEISMOLOGICA SINICA source mechanism Event Projection

source Characteristics of the 2012 Ahar-Varzaghan Earthquake

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Open Journal of Geology 2016年第1期6卷 39-46页

作者： Maryam Aminipanah Manouchehr Ghorashi Mohsen Pourkermani Abdolmajid Asadi Katayoun Behzadafshar Department of Geology Fars Science and Research Branch Islamic Azad University Shiraz Iran

The August 11, 2012 Mw 6.4 earthquakes in northwestern Iran occurred as a result of oblique strike-slip faulting in the shallow crust of the Eurasia plate, approximately 300 kilometer east of the plate boundary between the Eurasia and Arabia plates. The seismotectonics of this region is controlled by the collision of the Arabia and Eurasia plates;at the latitude of the earthquakes, the Arabia plate moves almost due north with respect to the Eurasia plate at a rate of approximately 26 millimeter per year. Over the past forty years, seven earthquakes of Mw 6 or greater have occurred within 300 kilometer of today’s events. The nearest was a Mw 6.1 earthquake in February of 1997, approximately 100 kilometer to the east, which caused 1100 fatalities. The studied area encourage the authors to determine the focal mechanism, source time function and sub events’ features which can guide us to reliable judges.

关键词： Ahar-Varzaghan Earthquake source Time Function source mechanism source Parameters