气候变化领域集成服务门户(CCPortal): Analysis of three-dimensional slope stability combined with rainfall and earthquake

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DOI	10.5194/nhess-24-1741-2024
	Analysis of three-dimensional slope stability combined with rainfall and earthquake
	Wang, Jiao; Wang, Zhangxing; Sun, Guanhua; Luo, Hongming
发表日期	2024
ISSN	1561-8633
EISSN	1684-9981
起始页码	24
结束页码	5
卷号	24 期号:5
英文摘要	In the current context of global climate change, geohazards such as earthquakes and extreme rainfall pose a serious threat to regional stability. We investigate a three-dimensional (3D) slope dynamic model under earthquake action, derive the calculation of seepage force and the normal stress expression of slip surface under seepage and earthquake, and propose a rigorous overall analysis method to solve the safety factor of slopes subjected to combined with rainfall and earthquake. The accuracy and reliability of the method is verified by two classical examples. Finally, the effects of soil permeability coefficient, porosity, and saturation on slope stability under rainfall in a project located in the Three Gorges Reservoir area are analyzed. The safety evolution of the slope combined with both rainfall and earthquake is also studied. The results indicate that porosity has a greater impact on the safety factor under rainfall conditions, while the influence of permeability coefficient and saturation is relatively small. With the increase of horizontal seismic coefficient, the safety factor of the slope decreases significantly. The influence of earthquake on slope stability is significantly greater than that of rainfall. The corresponding safety factor when the vertical seismic action is vertically downward is smaller than that when it is vertically upward. When considering both horizontal and vertical seismic effects, slope stability is lower.
语种	英语
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences ; Water Resources
WOS类目	Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences ; Water Resources
WOS记录号	WOS:001222542200001
来源期刊	NATURAL HAZARDS AND EARTH SYSTEM SCIENCES
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/295029
作者单位	Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
推荐引用方式 GB/T 7714	Wang, Jiao,Wang, Zhangxing,Sun, Guanhua,et al. Analysis of three-dimensional slope stability combined with rainfall and earthquake[J],2024,24(5).
APA	Wang, Jiao,Wang, Zhangxing,Sun, Guanhua,&Luo, Hongming.(2024).Analysis of three-dimensional slope stability combined with rainfall and earthquake.NATURAL HAZARDS AND EARTH SYSTEM SCIENCES,24(5).
MLA	Wang, Jiao,et al."Analysis of three-dimensional slope stability combined with rainfall and earthquake".NATURAL HAZARDS AND EARTH SYSTEM SCIENCES 24.5(2024).