中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Multi-scale particle morphology evolution in rotating drum tests: Role of particle shape and pore fluid

文献类型:期刊论文

作者Yao, Ting4; Yang, Hongwei3; Lourenco, Sergio D. N.2; Baudet, Beatrice A.1; Kwok, Fiona C. Y.2
刊名ENGINEERING GEOLOGY
出版日期2022-06-20
卷号303页码:10
关键词Debris avalanches 3D particle morphology Pore fluid
ISSN号0013-7952
DOI10.1016/j.enggeo.2022.106669
英文摘要During the downslope long-distance movement of debris avalanches, particles interact with each other in various modes, by rolling, sliding and colliding with each other. During transport, grains may undergo breakage, changing in size and shape. However, research on debris avalanches at the grain scale remains limited, in particular, the evolution of grain morphology at different scales, from the overall form down to surface roughness, with runout distance. This paper investigates the evolution of particle morphology of granite gravel particles during long distance travel using a rotating drum, Micro-Deval apparatus, together with three-dimensional (3D) image analysis with a 3D laser scanner. The effects of particle shape and pore fluid (dry, saturated with water or slurry) on the evolution of particle morphology during transport were investigated. It was found that while the gravel was strong enough to resist the fragmentation that could be induced by the inter-particle actions during testing, the corners and edges became rounded, and the general form and surface roughness remained unaffected by the particle interactions. The more angular the grains, the easier the corners to be abraded during interaction. The change of local roundness of the grains was amplified in water-saturated conditions and suppressed in a slurry-saturated medium. The viscosity of the pore fluid, rather than initial particle shape, was critical in controlling the particle morphology evolution.
资助项目Research Grants Council of HKSAR[17200114] ; Research Grants Council of HKSAR[TR22-603-15N] ; National Natural Science Foundation of China[42177154] ; National Natural Science Foundation of China[41402279]
WOS研究方向Engineering ; Geology
语种英语
WOS记录号WOS:000860758100003
出版者ELSEVIER
源URL[http://119.78.100.198/handle/2S6PX9GI/37860]  
专题中科院武汉岩土力学所
通讯作者Lourenco, Sergio D. N.
作者单位1.UCL, Dept Civil Environm & Geomat Engn, Chadwick Bldg,Gower St, London WC1E 6BT, England
2.Univ Hong Kong, Dept Civil Engn, Hong Kong, Peoples R China
3.Sun Yat Sen Univ, Sch Civil Engn, Guangzhou, Peoples R China
4.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Beijing, Peoples R China
推荐引用方式
GB/T 7714
Yao, Ting,Yang, Hongwei,Lourenco, Sergio D. N.,et al. Multi-scale particle morphology evolution in rotating drum tests: Role of particle shape and pore fluid[J]. ENGINEERING GEOLOGY,2022,303:10.
APA Yao, Ting,Yang, Hongwei,Lourenco, Sergio D. N.,Baudet, Beatrice A.,&Kwok, Fiona C. Y..(2022).Multi-scale particle morphology evolution in rotating drum tests: Role of particle shape and pore fluid.ENGINEERING GEOLOGY,303,10.
MLA Yao, Ting,et al."Multi-scale particle morphology evolution in rotating drum tests: Role of particle shape and pore fluid".ENGINEERING GEOLOGY 303(2022):10.

入库方式: OAI收割

来源:武汉岩土力学研究所

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