Dynamic process of the massive Xinmo landslide, Sichuan (China), from joint seismic signal and morphodynamic analysis

doi:10.1007/s10064-018-1360-0

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部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

	Dynamic process of the massive Xinmo landslide, Sichuan (China), from joint seismic signal and morphodynamic analysis
	Xiuqiang Bai 1,2,3; Jihao Jian 4; Siming He1,5,6 ; Wei Liu5,6 ; Liu, Wei; He, Siming
刊名	Bulletin of Engineering Geology and the Environment
	2018
页码	DOI:10.1007/s10064-018-1360-0
关键词	Xinmo village landslide Morphodynamic Seismic signal Frictional velocity-weakening
ISSN号	1435-9529
DOI	10.1007/s10064-018-1360-0
通讯作者	Siming He
产权排序	5
英文摘要	On 24 June 2017, a massive high-position landslide occurred at Diexi, Maoxian county, Sichuan, China, destroying the village of Xinmo with over 80 fatalities. Based on field surveys and DEM data before and after the landslide, the run-out of the landslide had a horizontal extent of 2400 m and a vertical extent of 1200 m and covered an area of about 1.48 × 10 m. Based on the pre- and post-landslide profiles, the landslide region can be divided into four zones: source area, erosion area, sliding area, and accumulation area. The volume and area of each zone were calculated from DEM data before and after the landslide. Because of the fragmentation and erosion of the landslide during movement, the landslide volume increased from 2.8 × 10 m to 6.4 × 10 m; the fractional amount of volume expansion due to fragmentation (FF) and entrainment ratio (ER) were 0.033 and 1.23, respectively. The velocity and acceleration of the Xinmo landslide were calculated through the inverted forces from seismic waves. The friction coefficients in each zone of the landslide during movement were also obtained, providing a useful parameter for numerical simulation modeling. An inverse relation was found between the absolute velocity and friction coefficient of each zone, demonstrating the existence of frictional velocity-weakening in massive extensive landslides. Based on frictional velocity-weakening, the steady-state apparent friction μ(U, σ) as a function of absolute slip velocity U and normal pressure σ was also obtained.
语种	英语
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/23505]
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
通讯作者	He, Siming
作者单位	1.CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, China; 2.Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China; 3.University of Chinese Academy of Sciences, Beijing, China; 4.College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu, China; 5.Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Science, Chengdu, China; 6.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China
推荐引用方式 GB/T 7714	Xiuqiang Bai,Jihao Jian,Siming He,et al. Dynamic process of the massive Xinmo landslide, Sichuan (China), from joint seismic signal and morphodynamic analysis[J]. Bulletin of Engineering Geology and the Environment,2018:DOI:10.1007/s10064-018-1360-0.
APA	Xiuqiang Bai,Jihao Jian,Siming He,Wei Liu,Liu, Wei,&He, Siming.(2018).Dynamic process of the massive Xinmo landslide, Sichuan (China), from joint seismic signal and morphodynamic analysis.Bulletin of Engineering Geology and the Environment,DOI:10.1007/s10064-018-1360-0.
MLA	Xiuqiang Bai,et al."Dynamic process of the massive Xinmo landslide, Sichuan (China), from joint seismic signal and morphodynamic analysis".Bulletin of Engineering Geology and the Environment (2018):DOI:10.1007/s10064-018-1360-0.