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
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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 |
DOI | 10.1016/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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