IMHE OpenIR  > 山地灾害与地表过程重点实验室
Effects of Material Composition and Water Content on the Mechanical Properties of Landslide Deposits Triggered by the Wenchuan Earthquake
Zhou Jiawen1,2; Cui Peng3; Yang Xingguo4
Corresponding AuthorZhou Jiawen
2016
Source PublicationACTA GEOLOGICA SINICA-ENGLISH EDITION
ISSN1000-9515
EISSN1755-6724
Volume90Issue:1Pages:242-257
SubtypeArticle
AbstractAbundant landslide deposits were triggered by the Wenchuan earthquake, providing a rich source of material for subsequent debris flows or slope failures under rainfall conditions. A good understanding of the physical and mechanical properties of the landslide deposits is very important to the research on slope failure mechanisms and the initiation of debris flow. Laboratory biaxial compression tests are used to study the material compositions and water content impacts on the mechanical properties of landslide deposits, and a discrete element method (a bond-contact model) is used to study the particle stiffness, bond force, friction coefficient and confining stress impact on the mechanical behaviors and the relationships between the numerical and experimental parameters. The experimental results show that the failure stress of landslide deposits is decreased with increasing content of fine particles and also with increased water content, especially at the initial increasing stage. Cohesion of the saturated landslide deposits is increased, but the friction angle is decreased with the increase in the fme particle content. Shear strength parameters (the cohesion and friction angle) are decreased with the increasing water content at the initial increasing stage, and then, they slowly decrease. There is a critical value of the water content at 5%-7% (in weight) for the failure stress and shear strength parameters of the landslide deposits. Quadratic equations are presented to describe the relation between the bond force and cohesion, and the numerical friction coefficient and the experimental friction angle.
KeywordLandslide Deposits Particle Size Distribution Water Content Shear Strength Parameters Numerical Modeling
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1111/1755-6724.12655
WOS Subject ExtendedGeology
Indexed BySCI
WOS KeywordSHEAR-STRENGTH ; FLOW DEPOSITS ; SOIL ; CHINA ; MIXTURES ; BEHAVIOR ; ZONES ; RIVER ; ROCK
Language英语
Quartile3区
TOP
WOS SubjectGeosciences, Multidisciplinary
WOS IDWOS:000371440500019
Funding OrganizationKey Deployment Project of the Chinese Academy of Sciences (KZZD)(EW-05-01) ; National Natural Science Foundation of China(41472272 ; Opening fund of State Key Laboratory of Geohazard Prevention and Geoenvironment Protection (Chengdu University of Technology(SKLGP2013K015) ; Science Foundation for Excellent Youth Scholars of Sichuan University(2013SCUO4A07) ; 41102194)
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/15149
Collection山地灾害与地表过程重点实验室
Affiliation1.Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Sichuan, Peoples R China
2.Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm, Chengdu 610059, Sichuan, Peoples R China
3.Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Chengdu 610044, Sichuan, Peoples R China
4.Sichuan Univ, Coll Water Resource & Hydropower, Chengdu 610065, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Zhou Jiawen,Cui Peng,Yang Xingguo. Effects of Material Composition and Water Content on the Mechanical Properties of Landslide Deposits Triggered by the Wenchuan Earthquake[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,2016,90(1):242-257.
APA Zhou Jiawen,Cui Peng,&Yang Xingguo.(2016).Effects of Material Composition and Water Content on the Mechanical Properties of Landslide Deposits Triggered by the Wenchuan Earthquake.ACTA GEOLOGICA SINICA-ENGLISH EDITION,90(1),242-257.
MLA Zhou Jiawen,et al."Effects of Material Composition and Water Content on the Mechanical Properties of Landslide Deposits Triggered by the Wenchuan Earthquake".ACTA GEOLOGICA SINICA-ENGLISH EDITION 90.1(2016):242-257.
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