气候变化领域集成服务门户(CCPortal): UAV survey and numerical modeling of loess landslides: an example from Zaoling, southern Shanxi Province, China

CCPortal

DOI	10.1007/s11069-020-04207-1
	UAV survey and numerical modeling of loess landslides: an example from Zaoling, southern Shanxi Province, China
	Ma S.; Wei J.; Xu C.; Shao X.; Xu S.; Chai S.; Cui Y.
发表日期	2020
ISSN	0921030X
起始页码	1125
结束页码	1140
卷号	104 期号:1
英文摘要	This work attempted to reveal the geometric and kinematic characteristics of a loess landslide that occurred at Zaoling, southern Shanxi Province, China, on March 15, 2019. Based on the high-resolution unmanned aerial vehicle survey and DEM data acquired after this event, the topography of the study area was reconstructed to estimate the volumes of the source area and the deposit area of the landslide. Coupled with the high-resolution three-dimensional topographic data, three-dimensional particle flow code was used to simulate the motion process and depositing characteristics of the landslide. Results show that the Zaoling landslide is a deep-seated loess landslide with a projection area of 9844 m2 and the attitude of the sliding surface 355°∠37° (trending and dip). The total volumes of the source zone and accumulation zone are 77,000 and 82,000 m3, respectively. The simulation results show that the whole sliding process lasts about 17 s. The maximum average velocity of the sliding body is 5.12 m/s and the average sliding displacement is 33.3 m. Comparing the depositing thickness obtained from the simulation with the reality shows that the accumulation thickness of the deposit area decreases gradually from the center to both sides. The accumulation characteristics from the simulation are roughly consistent with those of the actual landslide. According to the latest landslide classification system for loess slopes, the Zaoling landslide is a typical rotational slide. It is a typical case for loess landslide studies, in particular, its special failure mechanism and kinematic features. © 2020, Springer Nature B.V.
关键词	Loess landslide Numerical modeling Particle flow codes (PFC)Unmanned aerial vehicle (UAV)Volume analysis
英文关键词	deposition; digital elevation model; geometry; landslide; loess; numerical model; particle motion; topography; unmanned vehicle; volume; China; Shanxi
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/205813
作者单位	Key Laboratory of Active Tectonics and Volcano, Institute of Geology, China Earthquake Administration, #1 Huayanli, Chaoyang District, P. O. Box 9803, Beijing, 100029, China; College of Geology and Environment, Xi’an University of Science and Technology, Xi’an, Shaanxi 710054, China; Geological Research Institute for Coal Green Mining, Xi’an University of Science and Technology, Xi’an, Shaanxi 710054, China; National Institute of Natural Hazards, Ministry of Emergency Management of China (former Institute of Crustal Dynamics, China Earthquake Administration), Beijing, 100085, China; Lanzhou Institute of Seismology, China Earthquake Administration, Lanzhou, Gansu 730000, China; Key Laboratory of Loess Earthquake Engineering, China Earthquake Administration and Gansu Province, Lanzhou, Gansu 730000, China; School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan, Anhui 232001, China
推荐引用方式 GB/T 7714	Ma S.,Wei J.,Xu C.,et al. UAV survey and numerical modeling of loess landslides: an example from Zaoling, southern Shanxi Province, China[J],2020,104(1).
APA	Ma S..,Wei J..,Xu C..,Shao X..,Xu S..,...&Cui Y..(2020).UAV survey and numerical modeling of loess landslides: an example from Zaoling, southern Shanxi Province, China.Natural Hazards,104(1).
MLA	Ma S.,et al."UAV survey and numerical modeling of loess landslides: an example from Zaoling, southern Shanxi Province, China".Natural Hazards 104.1(2020).