Huangtupo landslide stability under water level fluctuations of the Three Gorges reservoir

doi:10.1007/s10346-015-0637-7

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	Huangtupo landslide stability under water level fluctuations of the Three Gorges reservoir
	Zheng, Hong 3; Dai, Fuchu 1; Tang, Huiming 2; Sun, Guanhua 3
刊名	LANDSLIDES
	2016
卷号	13 期号:5 页码:1167-1179
关键词	Landslide 3-dimensional rigorous limit equilibrium method Stability analysis Three Gorges Project
ISSN号	1612-510X
DOI	10.1007/s10346-015-0637-7
英文摘要	The Huangtupo riverside slope, which extends an area of 1.35 x 10(6) m(2) and has a total volume of 6.934 x 10(7) m(3), is one of the most noted large-scale landslides with great concern about the safety of immigrants in the Three Gorges reservoir area of China. During the normal operation, the reservoir water level fluctuates periodically. Water level fluctuation will soften the strength of the geologic materials on the banks, induce underground water fluctuation, and in turn affect the slope stability. On the basis of the thorough engineering geological survey, the analysis of engineering geological conditions and deformation mechanism is conducted primarily. Then, the Huangtupo landslide is divided into four minor landslides, all of which have typical three-dimensional characteristics. To these landslides, a three-dimensional rigorous limit equilibrium method is proposed, which can accommodate failure surfaces of any shape, and satisfies all the equilibrium conditions. In terms of the strength parameters of geologic materials, the stability evolution of the four minor landslides at the Huangtupo landslide under periodical water level fluctuation is investigated in detail. From the results, the 3D safety factors turned out to be somewhat bigger than the 2D results even though they displayed the same trends. The differences between 2D and 3D results are about 2.92-6.11 %. The maximum reduction in safety factors with the rapid down of water level is 0.11. It is suggested that the safety margin of the two minor landslides near the riverside is insufficient and might become instable under periodical water level fluctuation.
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000385174600023
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3941]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.Beijing Univ Technol, Key Lab Urban Secur & Disaster Engn 2.China Univ Geosci ; 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ;
推荐引用方式 GB/T 7714	Zheng, Hong,Dai, Fuchu,Tang, Huiming,et al. Huangtupo landslide stability under water level fluctuations of the Three Gorges reservoir[J]. LANDSLIDES,2016,13(5):1167-1179.
APA	Zheng, Hong,Dai, Fuchu,Tang, Huiming,&Sun, Guanhua.(2016).Huangtupo landslide stability under water level fluctuations of the Three Gorges reservoir.LANDSLIDES,13(5),1167-1179.
MLA	Zheng, Hong,et al."Huangtupo landslide stability under water level fluctuations of the Three Gorges reservoir".LANDSLIDES 13.5(2016):1167-1179.