Effects of Material Composition and Water Content on the Mechanical Properties of Landslide Deposits Triggered by the Wenchuan Earthquake
文献类型：期刊论文
| 作者 | Zhou Jiawen1,2; Cui Peng3 ; Yang Xingguo4
|
| 刊名 | ACTA GEOLOGICA SINICA-ENGLISH EDITION
 |
| 出版日期 | 2016-02-01 |
| 卷号 | 90期号:1页码:242-257 |
| ISSN号 | 1000-9515 |
| 关键词 | landslide deposits particle size distribution water content shear strength parameters numerical modeling |
| 通讯作者 | Zhou Jiawen |
| 英文摘要 | Abundant 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Geosciences, Multidisciplinary |
| 研究领域[WOS] | Geology |
| 关键词[WOS] | SHEAR-STRENGTH ; FLOW DEPOSITS ; SOIL ; CHINA ; MIXTURES ; BEHAVIOR ; ZONES ; RIVER ; ROCK |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000371440500019 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/15149]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 作者单位 | 1.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 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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