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Experimental Study on the Mobility of Channelized Granular Mass Flow
Zhou Gongdan1,2,3; Wright, Nigel G.4; Sun Qicheng5; Cai Qipeng6
Corresponding AuthorZhou Gongdan
AbstractGranular mass flows (e.g., debris flows/avalanches) in landslide-prone areas are of great concern because they often cause catastrophic disasters as a result of their long run-out distances and large impact forces. To investigate the factors influencing granular mass flow mobility, experimental tests were conducted in a flume model. Granular materials consisting of homogeneous sand and non homogeneous sandy soil were used for studying particle size effects. Run-out tests with variable flow masses, water contents, and sloping channel confinement parameters were conducted as well. The results indicated that granular mass flow mobility was significantly influenced by the initial water content; a critical water content corresponding to the smallest flow mobility exists for different granular materials. An increase in the total flow mass generally induced a reduction in the travel angle (an increase in flow mobility). Consistent with field observations, the travel angles for different granular materials decreased roughly in proportion to the logarithm of mass. The flume model tests illustrate that the measured travel angles increase as the proportion of fine particles increases. Interestingly, natural terrain possesses critical confinement characteristics for different granular mass flows.
KeywordGranular Mass Flow Mobility Water Content Flow Mass Fine Particle Channel Confinement
WOS HeadingsScience & Technology ; Physical Sciences
WOS Subject ExtendedGeology
Indexed BySCI
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000383055000019
Funding OrganizationScience and Technology Service Network Initiative Program of the Chinese Academy of Sciences(KFJ-EW-STS-094-2) ; "Hundred Talents" Program of the Chinese Academy of Sciences (Sulijun) ; National Natural Science Foundation of China(41201012 ; Hundred Young Talents Program of the Institute of Mountain Hazards and Environment(SDSQB-2013-01) ; Chinese Academy of Sciences(2012T1Z0042) ; 51208218)
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Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
3.Minist Water Conservancy & Power, Chengdu 610041, Peoples R China
4.Univ Leeds, Sch Civil Engn, Leeds LS2 9JT, W Yorkshire, England
5.Tsinghua Univ, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China
6.Huaqiao Univ, Coll Civil Engn, Xiamen 361021, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Zhou Gongdan,Wright, Nigel G.,Sun Qicheng,et al. Experimental Study on the Mobility of Channelized Granular Mass Flow[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2016,90(3):988-998.
APA Zhou Gongdan,Wright, Nigel G.,Sun Qicheng,&Cai Qipeng.(2016).Experimental Study on the Mobility of Channelized Granular Mass Flow.ACTA GEOLOGICA SINICA-ENGLISH EDITION,90(3),988-998.
MLA Zhou Gongdan,et al."Experimental Study on the Mobility of Channelized Granular Mass Flow".ACTA GEOLOGICA SINICA-ENGLISH EDITION 90.3(2016):988-998.
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