气候变化领域集成服务门户(CCPortal): Deformation and potential failure analysis of a giant old deposit in the southeastern margin of the Qinghai-Tibet Plateau based on SBAS-InSAR and numerical simulation

CCPortal

DOI	10.1007/s10064-023-03080-z
	Deformation and potential failure analysis of a giant old deposit in the southeastern margin of the Qinghai-Tibet Plateau based on SBAS-InSAR and numerical simulation
	Li, Yuchao; Chen, Jianping; Tan, Chun; Li, Zhihai; Zhang, Yansong; Yan, Jianhua
发表日期	2023
ISSN	1435-9529
EISSN	1435-9537
卷号	82 期号:2
英文摘要	Old deposits are typical products of the rapid topographical changes on the southeastern margin of the Qinghai-Tibet Plateau and its surroundings. Catastrophic landslides often occur in unstable areas of old deposits, causing great damage to life, infrastructure, and the environment. This study takes the Sangushui old deposit as the research object. Considering the large number of people and buildings on the deposit surface, a potential failure analysis of the deposit is important for disaster prevention and control. The field investigation revealed the existence of local deformation and failure. Small baseline subset Interferometric Synthetic Aperture Radar (SBAS-InSAR) technology was used to analyze the surface displacement characteristics of the deposit and to determine the potential instability zone (Zones A and B). Following this, a finite element model (FEM) was used to analyze the stability of the deposit in natural and seismic conditions. The results reveal the existence of two potential failure zones at the front of the deposit. The volumes of Part I and Part II are determined as 974.7 x 10(4) m(3) and 587.5 x 10(4) m(3), respectively. The location of the failure zone is essentially consistent with the results of the SBAS-InSAR analysis. Affected by the topography, material composition and flow velocity of the Jinsha River, although the potential landslides will not block the river for a long period of time, they may induce damage to the cultivated land and infrastructure. Therefore, it is necessary to define and adopt preventive measures and establish an early warning system.
关键词	Old deposit SBAS-InSAR Deformation analysis Numerical simulation Potential failure analysis
英文关键词	STABILITY ANALYSIS; NORTHERN APENNINES; DAMMED LAKE; LANDSLIDE; SLOPE; SCATTERERS; RIVER
WOS研究方向	Engineering, Environmental ; Engineering, Geological ; Geosciences, Multidisciplinary
WOS记录号	WOS:000924010500001
来源期刊	BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283358
作者单位	Jilin University
推荐引用方式 GB/T 7714	Li, Yuchao,Chen, Jianping,Tan, Chun,et al. Deformation and potential failure analysis of a giant old deposit in the southeastern margin of the Qinghai-Tibet Plateau based on SBAS-InSAR and numerical simulation[J],2023,82(2).
APA	Li, Yuchao,Chen, Jianping,Tan, Chun,Li, Zhihai,Zhang, Yansong,&Yan, Jianhua.(2023).Deformation and potential failure analysis of a giant old deposit in the southeastern margin of the Qinghai-Tibet Plateau based on SBAS-InSAR and numerical simulation.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,82(2).
MLA	Li, Yuchao,et al."Deformation and potential failure analysis of a giant old deposit in the southeastern margin of the Qinghai-Tibet Plateau based on SBAS-InSAR and numerical simulation".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 82.2(2023).