IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2016  > Vol13 No.6
Experimental study of entrainment behavior of debris flow over channel inflexion points
Hu Kai-heng1,2,3; Pu Li1,2,3,4; Wang Xie-kang5
Corresponding AuthorHU Kai-heng
2016
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
EISSN1993-0321
Volume13Issue:6Pages:971-984
SubtypeArticle
AbstractOn-spot observation and field reconnaissance of debris flows have revealed that inflexion points in the longitudinal profile of a movable channel may easily become unstable points that significantly affect their entrainment behavior. In this study, small-scale flume performed to investigate experiments were the entrainment characteristics of debris flows over two types of inflexion points, namely, a convex point, which has an upslope gradient that is less than the downslope gradient; and a concave point, which has an upslope gradient that is greater than the downslope gradient. It was observed that when debris flowed over a convex point, the entrainment developed gradually and progressively from the convex point in the downstream direction, and the primary control factors were the slope gradient and friction angle. Conversely, when debris flowed over a concave point, the entrainment was characterized by impacting and impinging erosion rather than traditional hydraulic erosion, and the impingement angle of the flow significantly determined the maximum erosion depth and outflow exit angle. An empirical relationship between the topography change and the control factors was obtained from the experimental data.
KeywordDebris Flow Entrainment Inflexion Points Erosion Impingement Angle
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1007/s11629-015-3749-6
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
WOS KeywordRAINFALL-INDUCED LANDSLIDES ; AUGUST 2010 ; EARTHQUAKE ; MOUNTAIN ; CHINA ; COLORADO ; ZHOUQU ; JAPAN ; JETS
Language英语
Quartile4区
TOP
WOS SubjectEnvironmental Sciences
WOS IDWOS:000379268300002
Funding OrganizationChinese Academy of Sciences(KZZD-EW-05-01) ; National Natural Science Foundation of China(41371039) ; Open Foundation of State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University(SKHL1426)
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/17213
CollectionJournal of Mountain Science_Journal of Mountain Science-2016_Vol13 No.6
山地灾害与地表过程重点实验室
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 Chinese Acad Sci, Beijing IO0049, Peoples R China
5.Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610063, 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
Hu Kai-heng,Pu Li,Wang Xie-kang. Experimental study of entrainment behavior of debris flow over channel inflexion points[J]. JOURNAL OF MOUNTAIN SCIENCE,2016,13(6):971-984.
APA Hu Kai-heng,Pu Li,&Wang Xie-kang.(2016).Experimental study of entrainment behavior of debris flow over channel inflexion points.JOURNAL OF MOUNTAIN SCIENCE,13(6),971-984.
MLA Hu Kai-heng,et al."Experimental study of entrainment behavior of debris flow over channel inflexion points".JOURNAL OF MOUNTAIN SCIENCE 13.6(2016):971-984.
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