Effect of Hydraulic Hysteresis on Stability of Infinite Slopes under Steady Infiltration

doi:10.1061/(ASCE)GT.1943-5606.0001724

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	Effect of Hydraulic Hysteresis on Stability of Infinite Slopes under Steady Infiltration
	Lu, Ning 1; Chen, Pan 2; Mirus, Benjamin 3; Godt, Jonathan W.4
刊名	JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
	2017
卷号	143 期号:9 页码:-
关键词	Unsaturated soil Hydraulic hysteresis Suction stress Infinite slope Steady infiltration Slope stability
ISSN号	1090-0241
DOI	10.1061/(ASCE)GT.1943-5606.0001724
英文摘要	Hydraulic hysteresis, including capillary soil water retention (SWR), air entrapment SWR, and hydraulic conductivity, is a common phenomenon in unsaturated soils. However, the influence of hydraulic hysteresis on suction stress, and subsequently slope stability, is generally ignored. This paper examines the influence of each of these three types of hysteresis on slope stability using an infinite slope stability analysis under steady infiltration conditions. First, hypothetical slopes for representative silty and sandy soils are examined. Then a monitored hillslope in the San Francisco Bay Area, California is assessed, using observed rainfall conditions and measured hydraulic and geotechnical properties of the colluvial soil. Results show that profiles of suction stress and the corresponding factor of safety are generally strongly affected by hydraulic hysteresis. Results suggest that each of the three types of hydraulic hysteresis may play a major role in the occurrence of slope failure, indicating that ignoring hydraulic hysteresis will likely lead to underestimates of failure potential and hence to inaccurate slope stability analysis. (C) 2017 American Society of Civil Engineers.
WOS研究方向	Engineering ; Geology
语种	英语
出版者	ASCE-AMER SOC CIVIL ENGINEERS
WOS记录号	WOS:000407327100006
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4125]
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.Colorado Sch Mines, Dept Civil & Environm Engn; 2.Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech ; 3.US Geol Survey, Landslide Hazards Program; 4.US Geol Survey, Landslide Hazards Program
推荐引用方式 GB/T 7714	Lu, Ning,Chen, Pan,Mirus, Benjamin,et al. Effect of Hydraulic Hysteresis on Stability of Infinite Slopes under Steady Infiltration[J]. JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING,2017,143(9):-.
APA	Lu, Ning,Chen, Pan,Mirus, Benjamin,&Godt, Jonathan W..(2017).Effect of Hydraulic Hysteresis on Stability of Infinite Slopes under Steady Infiltration.JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING,143(9),-.
MLA	Lu, Ning,et al."Effect of Hydraulic Hysteresis on Stability of Infinite Slopes under Steady Infiltration".JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING 143.9(2017):-.