IMHE OpenIR  > 山地灾害与地表过程重点实验室
Numerical analysis of dynamics of debris flow over erodible beds in Wenchuan earthquake-induced area
Ouyang, Chaojun1,2; He, Siming1,2; Tang, Chuan3
Corresponding AuthorOuyang, Chaojun
2015
Source PublicationENGINEERING GEOLOGY
ISSN0013-7952
EISSN1872-6917
Volume194Pages:62-72
SubtypeArticle
AbstractThe basal entrainment of debris flows play a significant role in its amplification and the final volume of deposition could be several to hundred times of its initial volume. In this paper, the shallow water equations coupled with basal material entrainment applied in debris flows have been given to demonstrate the amplification. A new basal entrainment model taking advantage of both Coulomb and Voellmy frictional laws are proposed, providing a unified formula to simulate the stop-and-go process of debris flows. Both time and space second-order MacCormack-TVD finite difference method is suggested to solve the coupled equations. Numerical comparisons with USGS flume experiment and Hongchun gully debris flow in Wenchuan earthquake-induced area are carried out to prove its effectiveness. It is established that the momentum exchange term between the flows and the basal materials has a significant influence on the dynamic characteristics and the entrainment effects are essential to model the dynamic process of debris flows in an earthquake-induced area. (C) 2014 Elsevier B.V. All rights reserved.
KeywordFinite Difference Method Maccormack Scheme Debris Flow Erodible Bed Sediment Entrainment Rate
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1016/j.enggeo.2014.07.012
WOS Subject ExtendedEngineering ; Geology
Indexed BySCI
WOS KeywordDAM-BREAK FLOWS ; GRANULAR FLOWS ; NEW-MODEL ; ENTRAINMENT ; AVALANCHES ; RUNOUT ; SIMULATION ; LANDSLIDES ; TOPOGRAPHY ; DEPOSITION
Language英语
Quartile3区
TOP
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000360416400007
Funding OrganizationChinese Academy of Sciences(KZZD-EW-05-01) ; NSFC(41101008 ; 41272346)
Citation statistics
Cited Times:90[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10917
Collection山地灾害与地表过程重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Sichuan, Peoples R China
2.Chinese Acad Sci, IMHE, Chengdu 610041, Sichuan, Peoples R China
3.Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Pro, Chengdu 610059, 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
Ouyang, Chaojun,He, Siming,Tang, Chuan. Numerical analysis of dynamics of debris flow over erodible beds in Wenchuan earthquake-induced area[J]. ENGINEERING GEOLOGY,2015,194:62-72.
APA Ouyang, Chaojun,He, Siming,&Tang, Chuan.(2015).Numerical analysis of dynamics of debris flow over erodible beds in Wenchuan earthquake-induced area.ENGINEERING GEOLOGY,194,62-72.
MLA Ouyang, Chaojun,et al."Numerical analysis of dynamics of debris flow over erodible beds in Wenchuan earthquake-induced area".ENGINEERING GEOLOGY 194(2015):62-72.
Files in This Item:
File Name/Size DocType Version Access License
ouyang2014.pdf(2721KB)期刊论文出版稿开放获取CC BY-NC-SAView Application Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Ouyang, Chaojun]'s Articles
[He, Siming]'s Articles
[Tang, Chuan]'s Articles
Baidu academic
Similar articles in Baidu academic
[Ouyang, Chaojun]'s Articles
[He, Siming]'s Articles
[Tang, Chuan]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Ouyang, Chaojun]'s Articles
[He, Siming]'s Articles
[Tang, Chuan]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: ouyang2014.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.