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Debris flow density determined by grain composition
Wang, Baoliang1,2; Li, Yong2,3; Liu, Daochuan3,4; Liu, Jingjing3,5
2018
Source PublicationLANDSLIDES
ISSN1612-510X
EISSN1612-5118
Volume15Issue:6Pages:1205-1213
SubtypeArticle
AbstractDensity is one of the most important parameters of debris flows. Because observing an active debris flow is very difficult, finding a method to estimate debris flow density is urgently needed for disaster mitigation engineering. This paper proposes an effective empirical equation in terms of grain size distribution (GSD) parameters based on observations in Jiangjia Gully, Yunnan Province, China. We found that the GSD follows P(D) = KD (-mu) exp(- D/Dc), with mu and Dc representing the fine and coarse grains, respectively. In particular, mu is associated with some characteristic porosity of soil in the natural state and increases with increased porosity. Dc characterizes the grain size range of the flow and increases with the grain concentration. Studies show that flow density is related to both parameters in power law. Here, we propose an empirical equation for estimating flow density: rho = 1.26 mu (-0.132) + 0.049Dc(0.443), which provides not only an estimation of the density for a flow, but also describes the variation in density with the GSD of material composition; this provides important information related to the design of debris flow engineering structures.
KeywordDebris flow Grain composition Grain size distribution Debris flow density
DOI10.1007/s10346-017-0912-x
Indexed BySCI
WOS KeywordSOIL POROSITY ; SUSPENSIONS ; MOBILITY
Language英语
Quartile2区
Funding ProjectNational Natural Science Foundation of China[41471011] ; West Light Foundation of The Chinese Academy of Sciences[Y5R2040040] ; Open Research Fund of the State Key Laboratory of Hydraulics and Mountain River Engineering[SKHL1516] ; Key Laboratory of Mountain Hazards and Surface Process, CAS[Y3R1340340] ; Scientific Project of Department of Land and Resources of Sichuan Province[KJ-2015-18] ; Dongchuan Debris Flow Observation and Research Station, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences
TOP
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000432127000013
Funding OrganizationNational Natural Science Foundation of China ; West Light Foundation of The Chinese Academy of Sciences ; Open Research Fund of the State Key Laboratory of Hydraulics and Mountain River Engineering ; Key Laboratory of Mountain Hazards and Surface Process, CAS ; Scientific Project of Department of Land and Resources of Sichuan Province ; Dongchuan Debris Flow Observation and Research Station, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences
PublisherSPRINGER HEIDELBERG
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/22998
Collection山地灾害与地表过程重点实验室
Corresponding AuthorLi, Yong
Affiliation1.Southwest Jiaotong Univ, Sch Civil Engn, Chengdu 610031, Sichuan, Peoples R China
2.Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Sichuan, Peoples R China
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, 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
Wang, Baoliang,Li, Yong,Liu, Daochuan,et al. Debris flow density determined by grain composition[J]. LANDSLIDES,2018,15(6):1205-1213.
APA Wang, Baoliang,Li, Yong,Liu, Daochuan,&Liu, Jingjing.(2018).Debris flow density determined by grain composition.LANDSLIDES,15(6),1205-1213.
MLA Wang, Baoliang,et al."Debris flow density determined by grain composition".LANDSLIDES 15.6(2018):1205-1213.
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