Characteristics of grain size distribution and the shear strength analysis of Chenjiaba long runout coseismic landslide

doi:10.1007/s11629-019-5535-3

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院页岩气与地质工程重点实验室

	Characteristics of grain size distribution and the shear strength analysis of Chenjiaba long runout coseismic landslide
	Getahun, Ephrem 1,2,3,4; Qi Sheng-wen 1,2,3; Guo Song-feng 1,2,3; Zou Yu 1,2,3; Liang Ning 1,2,3
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2019-09-01
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
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.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23090402] ; National Science Foundation of China[41672307] ; National Science Foundation of China[41790442] ; National Science Foundation of China[41702345] ; CAS-TWAS presidential fellowship program
WOS关键词	2008 WENCHUAN EARTHQUAKE ; SOILS ; INTERFACES ; MOTION ; MODEL
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000485301000010
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; CAS-TWAS presidential fellowship program ; CAS-TWAS presidential fellowship program ; CAS-TWAS presidential fellowship program ; CAS-TWAS presidential fellowship program ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; CAS-TWAS presidential fellowship program ; CAS-TWAS presidential fellowship program ; CAS-TWAS presidential fellowship program ; CAS-TWAS presidential fellowship program ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; CAS-TWAS presidential fellowship program ; CAS-TWAS presidential fellowship program ; CAS-TWAS presidential fellowship program ; CAS-TWAS presidential fellowship program ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; National Science Foundation of China ; CAS-TWAS presidential fellowship program ; CAS-TWAS presidential fellowship program ; CAS-TWAS presidential fellowship program ; CAS-TWAS presidential fellowship program
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/93601]
专题	地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者	Qi Sheng-wen
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Arba Minch Univ, Dept Geol, POB 21, Arba Minch 00251, Ethiopia
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.