Study of rainfall-induced slope failure

Rainfall-induced slope failures frequently occur in residual soil slopes in tropical regions. Previous research works indicated that the main cause of slope failure in residual soil slopes is rainfall infiltration. The infiltrating water decreases matric suction in the soil and consequently reduces...

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Main Authors: Harianto Rahardjo., Henry, Krisdan.
Other Authors: School of Civil and Environmental Engineering
Format: Research Report
Language:English
Published: 2009
Subjects:
Online Access:http://hdl.handle.net/10356/17226
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-172262023-03-03T16:44:16Z Study of rainfall-induced slope failure Harianto Rahardjo. Henry, Krisdan. School of Civil and Environmental Engineering DRNTU::Engineering::Civil engineering::Geotechnical Rainfall-induced slope failures frequently occur in residual soil slopes in tropical regions. Previous research works indicated that the main cause of slope failure in residual soil slopes is rainfall infiltration. The infiltrating water decreases matric suction in the soil and consequently reduces shear strength of the residual soil slopes. The role of soil types and soil properties on stability of slopes in Singapore during and after rainfall are investigated. Soils for the laboratory models and from real slopes were characterized in this project. Numerical simulations, including: seepage and slope stability analyses were performed. It was observed that the characteristics of variation in factor of safety of the real slopes in the field during and after a rainfall event were controlled by the hydraulic properties of the soil such as soil-water characteristic curves and permeability functions. Hence, it is imperative to characterize unsaturated soil properties properly in order to have correct understanding of rainfall-induced slope failure mechanism. RG 79/05 2009-06-01T09:17:53Z 2009-06-01T09:17:53Z 2007 2007 Research Report http://hdl.handle.net/10356/17226 en 78 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Civil engineering::Geotechnical
spellingShingle DRNTU::Engineering::Civil engineering::Geotechnical
Harianto Rahardjo.
Henry, Krisdan.
Study of rainfall-induced slope failure
description Rainfall-induced slope failures frequently occur in residual soil slopes in tropical regions. Previous research works indicated that the main cause of slope failure in residual soil slopes is rainfall infiltration. The infiltrating water decreases matric suction in the soil and consequently reduces shear strength of the residual soil slopes. The role of soil types and soil properties on stability of slopes in Singapore during and after rainfall are investigated. Soils for the laboratory models and from real slopes were characterized in this project. Numerical simulations, including: seepage and slope stability analyses were performed. It was observed that the characteristics of variation in factor of safety of the real slopes in the field during and after a rainfall event were controlled by the hydraulic properties of the soil such as soil-water characteristic curves and permeability functions. Hence, it is imperative to characterize unsaturated soil properties properly in order to have correct understanding of rainfall-induced slope failure mechanism.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Harianto Rahardjo.
Henry, Krisdan.
format Research Report
author Harianto Rahardjo.
Henry, Krisdan.
author_sort Harianto Rahardjo.
title Study of rainfall-induced slope failure
title_short Study of rainfall-induced slope failure
title_full Study of rainfall-induced slope failure
title_fullStr Study of rainfall-induced slope failure
title_full_unstemmed Study of rainfall-induced slope failure
title_sort study of rainfall-induced slope failure
publishDate 2009
url http://hdl.handle.net/10356/17226
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