Analyzing the role of soil water retention curve in slope stability for differently structured soils

Elisa Arnone, Leonardo Noto, Chiara Antinoro

Risultato della ricerca: Other

Abstract

 We analyzed the mechanical and hydrological effects of soil water retention curve (SWRC) models on theslope stability analyses of soils with unimodal and bimodal behavior. We used three different SWRC models, two bimodal models (Ross&Smettem and Dexter) vs. the traditional vanGenuchten model, to evaluate the Factor of Safety (FS) of a simple designed hillslope, based on the Bishopapproach for unsaturated soils. Two formulations for term were also considered. Results indicate that in cases of clayey soils, changes in FS obtained with different SWRC models especially atsoil moisture values within the residual zone. In sandy soils the choice of formulations can be moreimportant. The variation decreases as the slope conditions get worse, i.e. slope angle increases or frictionangle decreases
Lingua originaleEnglish
Numero di pagine1499
Stato di pubblicazionePublished - 2016

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water retention
slope stability
soil water
soil
safety
slope angle
hillslope
sandy soil
moisture

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title = "Analyzing the role of soil water retention curve in slope stability for differently structured soils",
abstract = " We analyzed the mechanical and hydrological effects of soil water retention curve (SWRC) models on theslope stability analyses of soils with unimodal and bimodal behavior. We used three different SWRC models, two bimodal models (Ross&Smettem and Dexter) vs. the traditional vanGenuchten model, to evaluate the Factor of Safety (FS) of a simple designed hillslope, based on the Bishopapproach for unsaturated soils. Two formulations for term were also considered. Results indicate that in cases of clayey soils, changes in FS obtained with different SWRC models especially atsoil moisture values within the residual zone. In sandy soils the choice of formulations can be moreimportant. The variation decreases as the slope conditions get worse, i.e. slope angle increases or frictionangle decreases",
author = "Elisa Arnone and Leonardo Noto and Chiara Antinoro",
year = "2016",
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TY - CONF

T1 - Analyzing the role of soil water retention curve in slope stability for differently structured soils

AU - Arnone, Elisa

AU - Noto, Leonardo

AU - Antinoro, Chiara

PY - 2016

Y1 - 2016

N2 -  We analyzed the mechanical and hydrological effects of soil water retention curve (SWRC) models on theslope stability analyses of soils with unimodal and bimodal behavior. We used three different SWRC models, two bimodal models (Ross&Smettem and Dexter) vs. the traditional vanGenuchten model, to evaluate the Factor of Safety (FS) of a simple designed hillslope, based on the Bishopapproach for unsaturated soils. Two formulations for term were also considered. Results indicate that in cases of clayey soils, changes in FS obtained with different SWRC models especially atsoil moisture values within the residual zone. In sandy soils the choice of formulations can be moreimportant. The variation decreases as the slope conditions get worse, i.e. slope angle increases or frictionangle decreases

AB -  We analyzed the mechanical and hydrological effects of soil water retention curve (SWRC) models on theslope stability analyses of soils with unimodal and bimodal behavior. We used three different SWRC models, two bimodal models (Ross&Smettem and Dexter) vs. the traditional vanGenuchten model, to evaluate the Factor of Safety (FS) of a simple designed hillslope, based on the Bishopapproach for unsaturated soils. Two formulations for term were also considered. Results indicate that in cases of clayey soils, changes in FS obtained with different SWRC models especially atsoil moisture values within the residual zone. In sandy soils the choice of formulations can be moreimportant. The variation decreases as the slope conditions get worse, i.e. slope angle increases or frictionangle decreases

UR - http://hdl.handle.net/10447/221571

M3 - Other

ER -