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Debris flow entrainment rates in non-uniform channels with convex and concave slopes
Li, Pu1,2,3,4; Hu, Kaiheng2,3,4; Wang, Xiekang5
2018
Source PublicationJOURNAL OF HYDRAULIC RESEARCH
ISSN0022-1686
EISSN1814-2079
Volume56Issue:2Pages:156-167
SubtypeArticle
Contribution Rank1
AbstractChannel topography plays an important role in debris flow entrainment processes. Field observations and flume experiments have demonstrated two notable erosion effects: abrasion on convex slopes resulting from layer-by-layer shearing and impact erosion on concave slopes. Most existing formulas for debris flow entrainment rates are derived from the uniform slope assumption and do not account for the two erosion effects. In order to take abrasion and impact erosion into consideration, this study incorporated two channel curvature functions into the entrainment formula that is based on equilibrium between flow frictional forces and basal resistance forces. The two functions control the effects of entrainment on different slope types and are based on empirical relationships with curvature obtained in flume experiments. The revised formula provides a unified procedure for debris flow entrainment rates in non-uniform channels.
KeywordConcave slopes convex slopes debris flow entrainment impact erosion non-uniform channel
DOI10.1080/00221686.2017.1313321
Indexed BySCI
WOS KeywordRAINFALL-INDUCED LANDSLIDES ; 3-DIMENSIONAL TERRAIN ; SNOW AVALANCHES ; GRANULAR AVALANCHES ; EARTHQUAKE ; EROSION ; MODEL ; IMPACT ; RUNOUT ; MOTION
Language英语
Quartile3区
Funding ProjectNational Natural Science Foundation of China[41371039] ; National Basic Research Program of China (973 Program)[2015CB452704] ; Open Foundation of State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University[SKHL1426]
TOP
WOS Research AreaEngineering ; Water Resources
WOS SubjectEngineering, Civil ; Water Resources
WOS IDWOS:000428198200002
Funding OrganizationNational Natural Science Foundation of China ; National Basic Research Program of China (973 Program) ; Open Foundation of State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University
PublisherTAYLOR & FRANCIS LTD
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/22982
Collection山地灾害与地表过程重点实验室
Corresponding AuthorHu, Kaiheng
Affiliation1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
2.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China;
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China;
4.Minist Water Conservancy & Power, Chengdu 610041, Sichuan, Peoples R China;
5.Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, 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
Li, Pu,Hu, Kaiheng,Wang, Xiekang. Debris flow entrainment rates in non-uniform channels with convex and concave slopes[J]. JOURNAL OF HYDRAULIC RESEARCH,2018,56(2):156-167.
APA Li, Pu,Hu, Kaiheng,&Wang, Xiekang.(2018).Debris flow entrainment rates in non-uniform channels with convex and concave slopes.JOURNAL OF HYDRAULIC RESEARCH,56(2),156-167.
MLA Li, Pu,et al."Debris flow entrainment rates in non-uniform channels with convex and concave slopes".JOURNAL OF HYDRAULIC RESEARCH 56.2(2018):156-167.
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