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Monitoring of internal failure evolution in cemented paste backfill under uniaxial deformation using in-situ X-ray computed tomography
Wang, Yu1,2; Liu, Dongqiao2; Hu, Yanzhi3
2019-03-01
Source PublicationARABIAN JOURNAL OF GEOSCIENCES
ISSN1866-7511
Volume12Issue:5Pages:17
AbstractFailure evolution of cemented paste backfill (CPB) is crucial to the stope stability in the mining industry. While many effects have been done on the strength requirement and macroscopic deformation behaviors of CPB, the mesoscopic failure mechanism is not yet well understood. In this work, a uniaxial compressive test on the CPB sample from Lilou iron mining was conducted under topographic monitoring using a 450-kV industrial X-ray computed tomography (CT). A specific self-developed loading device was used to match the CT machine to realize the real-time CT scanning. A series of 2D CT images were obtained by carrying out CT scanning at seven stages throughout sample deformation and from different positions in the sample. Clear CT images, CT value analysis, and void identification and extraction reveal that the sample experiences compression, damage, crack initiation, crack propagation, crack coalescence, and collapse stages. Besides, a damage constitutive equation is proposed first using the CT data, which can be used to predict the stress strain response of CPB. What is more, volumetric dilatancy characteristics caused by the damage and cracking behavior are investigated from the stress strain curve and the CT images, the result reveals the influence of localization deformation on the failure evolution of CPB. Through a series of meso-structural changes analysis, the meso-mechanisms of failure evolution in CPB have been first documented.
KeywordCemented paste backfill (CPB) X-ray CT Failure evolution Meso-structural change Compression test
DOI10.1007/s12517-019-4285-4
Funding OrganizationNational Key Technologies Research & Development Program ; National Key Technologies Research & Development Program ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Technologies Research & Development Program ; National Key Technologies Research & Development Program ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Technologies Research & Development Program ; National Key Technologies Research & Development Program ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Technologies Research & Development Program ; National Key Technologies Research & Development Program ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS KeywordMICROSTRUCTURAL PROPERTIES ; COMPRESSIVE STRENGTH ; TAILINGS ; TEMPERATURE ; DENSITY ; SULFATE ; STRESS ; MODEL ; ROCK ; FLOW
Language英语
Funding ProjectNational Key Technologies Research & Development Program[2018YFC0808402] ; National Key Technologies Research & Development Program[2018YFC0604601] ; Fundamental Research Funds for the Central Universities[2302017FRF-TP-17-027A1] ; National Natural Science Foundation of China[41502294]
Funding OrganizationNational Key Technologies Research & Development Program ; National Key Technologies Research & Development Program ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Technologies Research & Development Program ; National Key Technologies Research & Development Program ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Technologies Research & Development Program ; National Key Technologies Research & Development Program ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Technologies Research & Development Program ; National Key Technologies Research & Development Program ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaGeology
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000458825600004
PublisherSPRINGER HEIDELBERG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/90693
Collection页岩气与地质工程院重点实验室
Corresponding AuthorWang, Yu
Affiliation1.Univ Sci & Technol Beijing, Sch Civil & Resource Engn, Dept Civil Engn, Beijing Key Lab Urban Underground Space Engn, Beijing 100083, Peoples R China
2.China Univ Min & Technol, Key Lab GeoMech & Deep Underground Engn, Beijing 100083, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Wang, Yu,Liu, Dongqiao,Hu, Yanzhi. Monitoring of internal failure evolution in cemented paste backfill under uniaxial deformation using in-situ X-ray computed tomography[J]. ARABIAN JOURNAL OF GEOSCIENCES,2019,12(5):17.
APA Wang, Yu,Liu, Dongqiao,&Hu, Yanzhi.(2019).Monitoring of internal failure evolution in cemented paste backfill under uniaxial deformation using in-situ X-ray computed tomography.ARABIAN JOURNAL OF GEOSCIENCES,12(5),17.
MLA Wang, Yu,et al."Monitoring of internal failure evolution in cemented paste backfill under uniaxial deformation using in-situ X-ray computed tomography".ARABIAN JOURNAL OF GEOSCIENCES 12.5(2019):17.
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