Characteristics of grain size distribution and the shear strength analysis of Chenjiaba long runout coseismic landslide
文献类型：期刊论文
| 作者 | Getahun, Ephrem; Qi Sheng-wen; Guo Song-feng; Zou Yu; Liang Ning |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2019 |
| 卷号 | 16期号:9页码:2110-2125 |
| 关键词 | Grain size distribution Long runout Landslide Multistage-Multiphase Ring Shear |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-019-5535-3 |
| 文献子类 | Article |
| 英文摘要 | Study on the grain size distribution characteristics and the frictional strength behavior of the slide deposits are helpful to disclose the landslide runout process and understand the mechanism of a long runout landslide. We performed grain size distribution analysis on samples collected from Chenjiaba landslide induced by Wenchuan earthquake. The grain size distribution of samples from the landslide sections quantitatively depicts a gradual coarsening upward grading from shear zone to the top section. Then a multistage - multiphase ring shearing approach was used to determine a comparative shear strength behavior of samples from each landslide section. In this method, a sample was sheared continuously for large displacement and fast rate on different normal stress conditions. The multiphase shear mode with a maximum of 105 mm/min rate has allowed observing the qualitative change and patterns of the frictional resistance behaviors of soils under different normal stresses. The results of coefficient of friction values under multiphase shear mode have shown substantial post peak shear weakening behaviors after large shear displacement that can be narrated with long runout processes. The shear strength test results indicate that the shear zone samples have developed higher friction angle values compared to overlying section samples, on the last phase of shear process, which may be very important to understand the braking mechanism of a long runout landslide. |
| 电子版国际标准刊号 | 1993-0321 |
| 语种 | 英语 |
| WOS记录号 | WOS:000485301000010 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/46576]  |
| 专题 | Journal of Mountain Science_Journal of Mountain Science-2019_Vol16 No.9 |
| 推荐引用方式 GB/T 7714 | Getahun, Ephrem,Qi Sheng-wen,Guo Song-feng,et al. Characteristics of grain size distribution and the shear strength analysis of Chenjiaba long runout coseismic landslide[J]. JOURNAL OF MOUNTAIN SCIENCE,2019,16(9):2110-2125. |
| APA | Getahun, Ephrem,Qi Sheng-wen,Guo Song-feng,Zou Yu,&Liang Ning.(2019).Characteristics of grain size distribution and the shear strength analysis of Chenjiaba long runout coseismic landslide.JOURNAL OF MOUNTAIN SCIENCE,16(9),2110-2125. |
| MLA | Getahun, Ephrem,et al."Characteristics of grain size distribution and the shear strength analysis of Chenjiaba long runout coseismic landslide".JOURNAL OF MOUNTAIN SCIENCE 16.9(2019):2110-2125. |
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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