New insights into the failure mechanism and dynamic process of the Boli landslide, China

doi:10.1007/s10064-020-02085-2

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

	New insights into the failure mechanism and dynamic process of the Boli landslide, China
	Wu, Kanglin 1,2; Chen, Ningsheng 1; Hu, Guisheng 1; Wang, Tao 1; Zhang, Yong 1,2; Marcelo, Somos 3
刊名	BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
	2021-01-14
卷号	80 期号:3 页码:2131-2148
关键词	Boli landslide Failure mechanism Dynamic process Runoff supply Liquefaction
ISSN号	1435-9529
DOI	10.1007/s10064-020-02085-2
通讯作者	Chen, Ningsheng(chennsh@imde.ac.cn)
产权排序	1
文献子类	Article
英文摘要	The study of landslide initiation mechanisms and dynamic process analysis is important for monitoring, predicting, and controlling landslide occurrence. A giant landslide that occurred on July 19, 2018, in Yanyuan County, Southwest China, was investigated, providing a research example. In this paper, the failure mechanism and dynamic process of the Boli landslide were analyzed using field investigations, laboratory experiments, unmanned aerial vehicle (UAV) photogrammetry, remote sensing images, hydrological calculations, and numerical simulations. The results indicated that the antecedent rainfall was not the direct factor to saturate the sliding mass. The runoff supply provided by the comb-like channel group upstream of the landslide reached 709.5 mm, which was an important hydrodynamic triggering point for accelerating the sliding mass to saturation and instability. Numerical simulation results showed that the evolution of the landslide included three stages: low-speed initiation, accelerating sliding, and flow deposition. The maximum sliding speed of the landslide occurred during the second stage and reached 39 m/s. From the source zone to the Taozi Gully, the silt content decreased from 67.9 to 40%, which was an internal particle-triggering factor of the alteration of the sliding mass from the liquefaction-resistant state to the liquefaction-prone state. The study has revealed the failure mechanism of the landslide and presented its dynamic process, which could be used to provide a reference for the study of similar landslides mainly induced by runoff supplied by such channel groups.
电子版国际标准刊号	1435-9537
资助项目	National Natural Science Foundation of China[41861134008] ; Science and Technology Program of Sichuan[18ZDYF0329] ; Foundation of Institute of Mountain Hazards and Environment, CAS[SDS-135-1705]
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000607771800003
资助机构	National Natural Science Foundation of China ; Science and Technology Program of Sichuan ; Foundation of Institute of Mountain Hazards and Environment, CAS
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/55198]
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	Chen, Ningsheng
作者单位	1.Chinese Acad Sci, Inst Mt Hazards & Environm IMHE, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ la Frontera, Temuco 01145, Chile
推荐引用方式 GB/T 7714	Wu, Kanglin,Chen, Ningsheng,Hu, Guisheng,et al. New insights into the failure mechanism and dynamic process of the Boli landslide, China[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2021,80(3):2131-2148.
APA	Wu, Kanglin,Chen, Ningsheng,Hu, Guisheng,Wang, Tao,Zhang, Yong,&Marcelo, Somos.(2021).New insights into the failure mechanism and dynamic process of the Boli landslide, China.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,80(3),2131-2148.
MLA	Wu, Kanglin,et al."New insights into the failure mechanism and dynamic process of the Boli landslide, China".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 80.3(2021):2131-2148.