| DOI: | 10.1016/j.coldregions.2019.102964
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| 论文题名: | Ice lens induced interfacial hydraulic resistance in frost heave |
| 作者: | Zhou J.; Wei C.
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| 刊名: | Cold Regions Science and Technology
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| ISSN: | 0165232X
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| 出版年: | 2020
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| 卷: | 171 | | 语种: | 英语
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| 英文关键词: | Frost heave
; Frozen fringe
; Ice lens
; Interfacial hydraulic resistance
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| Scopus关键词: | Frozen soils
; Stream flow
; Frost heave
; Frozen fringe
; Hydraulic resistances
; Ice lens
; Ice-water interfaces
; Macroscopic interfaces
; Mechanical equilibrium
; Overburden pressures
; Ice
; cold region
; freezing
; frost heave
; hydraulics
; interface
; overburden
; particulate matter
; porewater
; temperature gradient
; water flow
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| 英文摘要: | Frost heave and ice lens cause the failure of engineerings and change the soil structure in cold regions. It is known that the water migrates from the unfrozen zone to feed the ice lens, but the mechanism of water migration in the vicinity of the ice lens is not well understood. In this study, the water migration at the interface between the ice lens and soil particles is theoretically investigated. Pore water flows from the soil pores to the unfrozen film between the ice lens and soil particles to expands the integral ice lens. The kinetics of the microscopic flow in the unfrozen film produces the hydraulic resistance at the macroscopic interface between ice lens and soil particles. Based on the global mechanical equilibrium at the ice-water interface, the rate of frost heave is derived for freezing soils with and without a frozen fringe. An expression for the neutral stress in the frozen fringe is developed to predict the initiation of new ice lenses with considering the effect of anisotropic stress of ice. The impacts of overburden pressure, temperature gradient, and interfacial hydraulic resistance on the rate of frost heave are discussed. In a relatively thick frozen fringe, the interfacial hydraulic resistance is insignificant compared to the hydraulic resistance of frozen fringe. However, if the thickness of frozen fringe is less than a critical value the interfacial hydraulic resistance will play a dominant role in the frost heave. This research is expected to facilitate the improvement of frost heave models, studying the influence of the interfacial hydraulic resistance on the characteristic of frost heave with and without a frozen fringe. © 2019 Elsevier B.V. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/159159
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| Appears in Collections: | 气候变化与战略
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作者单位: | State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, China
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| Recommended Citation: | |
Zhou J.,Wei C.. Ice lens induced interfacial hydraulic resistance in frost heave[J]. Cold Regions Science and Technology,2020-01-01,171
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