DOI: 10.1007/s11069-020-04492-w
论文题名: Analysis of loess landslide mechanism and numerical simulation stabilization on the Loess Plateau in Central China
作者: Xie W.-L. ; Guo Q. ; Wu J.Y. ; Li P. ; Yang H. ; Zhang M.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 106, 期: 1 起始页码: 805
结束页码: 827
语种: 英语
中文关键词: Anti-slide pile
; Failure mechanism
; Landslide stabilization
; Loess landslide
; Safety factor
英文关键词: deformation mechanism
; failure mechanism
; landslide
; loess
; numerical model
; pile
; safety
; stabilization
; China
; Loess Plateau
; Shaanxi
英文摘要: Loess landslides have complicated deformation mechanisms. Accurately describing the internal failure deformation of loess landslides and establishing a theoretical method of landslide instability evaluation for the prevention of subsequent landslides have become important topics in western development project construction in China. This paper presents a case study of the Zhonglou Mountain landslide in Shaanxi Province, China. Based on field investigation results, a two-dimensional stability analysis model was constructed using the finite element method. Taking the deformation characteristics of the landslide as the research basis, the distribution laws of the displacement, stress, and shear strain of this landslide were identified with the strength reduction finite element numerical simulation method. Additionally, the safety factor was evaluated under normal and storm conditions. The numerical simulation results show that the horizontal tensile stress of the landslide was mainly distributed in the middle and upper parts of the landslide under normal conditions, while the vertical tensile stress was distributed near the sliding surface. Under heavy rainfall, the sliding force increased, and the anti-sliding force and anti-sliding section decreased; the location of the maximum shear strain shifted down from the middle and upper parts of the landslide body to the area with a shear crack, and the plastic shear strain area expanded along nearly the entire the sliding surface, leading to the occurrence of a landslide. Thus, the use of anti-slide piles to stabilize the landslide was proposed and tested. Monitoring points were arranged along the sliding surface to evaluate the displacement, stress, and strain responses. The on-site observation results agreed with the modeling results. The use of anti-slide piles was demonstrated to be an effective stabilization method for the Zhonglou Mountain landslide. © 2021, The Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169472
Appears in Collections: 气候变化与战略
There are no files associated with this item.
作者单位: State Key Laboratory of Continental Dynamics, Department of Geology, Northwest University, Xi’an, Shaanxi 710069, China; Key Laboratory for Geo-Hazards in Loess Area, Ministry of Land and Resources, Xi’an Center of China Geological Survey, Xi’an, 710054, China; Shaanxi Hydrogeology Engineering Geology and Environment Geology Survey Center, Xi’an, Shaanxi 710068, China
Recommended Citation:
Xie W.-L.,Guo Q.,Wu J.Y.,et al. Analysis of loess landslide mechanism and numerical simulation stabilization on the Loess Plateau in Central China[J]. Natural Hazards,2021-01-01,106(1)