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Numerical investigation on progressive fracture behaviours of macroscopic heterogeneous rock bridge
Chen, Hongran1,2; Xue, Lei1
2020-04-15
Source PublicationEUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
ISSN1964-8189
Volume24Issue:5Pages:603-619
AbstractFailure of jointed rocks is highly dependent on the presence of rock bridges that exist across joint surfaces. It has long been assumed that such bridges are homogeneous orders, but continued investigation has found that, more often than not, they are a heterogeneous order. In this paper, the failure processes of generalised rock bridges (including two barriers and one which contains an inclusion) under compression with confinement are investigated experimentally and numerically. The impact of macroscopic heterogeneity is discussed in terms of fracture patterns and acoustic emission (AE) data amongst models. The patterns of crack propagation and coalescence are strongly dependent on macroscopic heterogeneity, and characterised by spatial distribution of AE events especially those of high magnitude. Local accelerations observed from curves of AE data suggest that failures are of heterogeneous orders. The piecewise curves separated by transforms from accelerations to decelerations are in the same exponential expression form, implying that the orders of crack development are similar.
KeywordConfining compression numerical simulation rock bridge macroscopic heterogeneity fracture pattern acoustic emission
DOI10.1080/19648189.2017.1410728
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund
WOS KeywordCRACK COALESCENCE ; ACOUSTIC-EMISSION ; RUPTURE PROCESS ; FAULT BRECCIA ; PART I ; FAILURE ; COMPRESSION ; PROPAGATION ; SIMULATION ; SANDSTONE
Language英语
Funding ProjectNational Natural Science Foundation of China[41572311] ; National Natural Science Foundation of China[41302233] ; NSFC-Henan Joint Fund[U1704243]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund ; NSFC-Henan Joint Fund
WOS Research AreaEngineering
WOS SubjectEngineering, Civil ; Engineering, Geological
WOS IDWOS:000521084900003
PublisherTAYLOR & FRANCIS LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/95527
Collection页岩气与地质工程院重点实验室
Corresponding AuthorChen, Hongran
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China
First Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Chen, Hongran,Xue, Lei. Numerical investigation on progressive fracture behaviours of macroscopic heterogeneous rock bridge[J]. EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING,2020,24(5):603-619.
APA Chen, Hongran,&Xue, Lei.(2020).Numerical investigation on progressive fracture behaviours of macroscopic heterogeneous rock bridge.EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING,24(5),603-619.
MLA Chen, Hongran,et al."Numerical investigation on progressive fracture behaviours of macroscopic heterogeneous rock bridge".EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING 24.5(2020):603-619.
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