Infiltration and Seepage Analysis in Soil Slopes

Infiltration plays a significant role in the instability of slopes (Zhang et al., 2011). The effect of seepage and infiltration on slope stability is traditionally addressed by calculating the factor of safety or critical depth for an infinite slope subject to seepage parallel to the slope surface....

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Bibliographic Details
Published inRainfall-Induced Soil Slope Failure pp. 39 - 88
Main Authors Zhang, Lulu, Li, Jinhui, Li, Xu, Zhang, Jie, Zhu, Hong
Format Book Chapter
LanguageEnglish
Published CRC Press 2016
Subjects
Volumetric Water Content
Matric Suction
Nth Time Interval
Richards Equation
Matric Flux Potential
Cumulative Infiltration
Unsaturated Soil
Surface Flux
Pore Water Pressure Head
Permeability Function
Pore Water Pressure
Numerical Oscillation
Green Ampt Model
Unsaturated Zone
Rainfall Intensity
Rainfall Infiltration
Sharp Wetting Fronts
Soil Suction
Infiltration Rate
Antecedent Rainfall
Negative Pore Water Pressures
Infiltration Capacity
Soil Slopes
Wetting Front
Pore Water Pressure Profiles
Online AccessGet full text
DOI10.1201/b20116-8

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Summary:Infiltration plays a significant role in the instability of slopes (Zhang et al., 2011). The effect of seepage and infiltration on slope stability is traditionally addressed by calculating the factor of safety or critical depth for an infinite slope subject to seepage parallel to the slope surface. This type of analysis assumes that saturated steady-state flow takes place over a given depth. To simplify the analysis as a worst-infiltration scenario, it is often assumed that the phreatic surface rises to coincide with the slope surface and that the slope is completely saturated (Collins and Znidarcic, 2004). For such fully saturated slopes, additional infiltration is not possible and rainfall will have no further effect on slope stability.
DOI:10.1201/b20116-8