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Spatial-temporal distribution of debris flow impact pressure on rigid barrier
Liu Dao-chuan1,2,3; You Yong1,2; Liu Jin-feng1,2; Li Yong1,2; Zhang Guang-ze4; Wang Dong4
Corresponding AuthorYou Yong(yyong@imde.ac.cn)
2019-04-01
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
Volume16Issue:4Pages:793-805
SubtypeArticle
Contribution Rank1
AbstractGrain composition plays a vital role in impact pressure of debris flow. Current approaches treat debris flow as uniform fluid and almost ignore its granular effects. A series of flume experiments have been carried out to explore the granular influence on the impact process of debris flow by using a contact surface pressure gauge sensor (Tactilus (R), produced by Sensor Products LLC). It is found that the maximum impact pressure for debris flow of low density fluctuates drastically with a long duration time while the fluctuation for flow of high density is short in time, respectively presenting logarithmic and linear form in longitudinal attenuation. This can be ascribed to the turbulence effect in the former and grain collisions and grain-fluid interaction in the latter. The horizontal distribution of the impact pressure can be considered as the equivalent distribution. For engineering purposes, the longitudinal distribution of the pressure can be generalized to a triangular distribution, from which a new impact method considering granular effects is proposed.
KeywordDebris flow Impact force Grain composition Spatio-temporal distribution Dynamic coefficient
DOI10.1007/s11629-018-5316-4
Indexed BySCI
WOS KeywordGRAIN COMPOSITION ; LANDSLIDE ; PHYSICS ; DESIGN ; FORCE
Language英语
Funding ProjectResearch on Prevention and Control Technology of Ecological Debris Flow Disasters from Department of Land and Resources of Sichuan Province[KJ-2018-24] ; Natural Science Foundation of China[41471011] ; Natural Science Foundation of China[41772343] ; Chinese Academy of Sciences and Organization Department of Sichuan Provincial Party Committee Light of West China Program ; Key International S&T Cooperation Projects[2016YFE0122400]
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000464752500006
Funding OrganizationResearch on Prevention and Control Technology of Ecological Debris Flow Disasters from Department of Land and Resources of Sichuan Province ; Natural Science Foundation of China ; Chinese Academy of Sciences and Organization Department of Sichuan Provincial Party Committee Light of West China Program ; Key International S&T Cooperation Projects
PublisherSCIENCE PRESS
EI Accession NumberSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/25877
Collection中国科学院水利部成都山地灾害与环境研究所
Corresponding AuthorYou Yong
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China;
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China;
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
4.China Railway Eryuan Engn Grp Co LTD, Chengdu 610031, Sichuan, 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
Corresponding 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
Liu Dao-chuan,You Yong,Liu Jin-feng,et al. Spatial-temporal distribution of debris flow impact pressure on rigid barrier[J]. JOURNAL OF MOUNTAIN SCIENCE,2019,16(4):793-805.
APA Liu Dao-chuan,You Yong,Liu Jin-feng,Li Yong,Zhang Guang-ze,&Wang Dong.(2019).Spatial-temporal distribution of debris flow impact pressure on rigid barrier.JOURNAL OF MOUNTAIN SCIENCE,16(4),793-805.
MLA Liu Dao-chuan,et al."Spatial-temporal distribution of debris flow impact pressure on rigid barrier".JOURNAL OF MOUNTAIN SCIENCE 16.4(2019):793-805.
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