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The influence of surface run-off to 3d slope stability analysis for rainfall induced landslide

Expansion of urban and recreational developments in hilly areas has resulted in increasing number of residential, commercial properties and infrastructure that is threatened by landslides. A three dimensional (3D) slope stability analysis has emerged recently due to its capability of capturing co...

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Main Authors: Keling, Noraidah, Yusoff, Izham Mohamad, Lateh, Habibah, Ujang, Uznir
Format: Conference or Workshop Item
Language:English
Published: 2015
Subjects:
H Social Sciences (General)
Online Access:http://eprints.usm.my/35121/1/PPIK27.pdf
http://eprints.usm.my/35121/
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spelling my.usm.eprints.35121 http://eprints.usm.my/35121/ The influence of surface run-off to 3d slope stability analysis for rainfall induced landslide Keling, Noraidah Yusoff, Izham Mohamad Lateh, Habibah Ujang, Uznir H Social Sciences (General) Expansion of urban and recreational developments in hilly areas has resulted in increasing number of residential, commercial properties and infrastructure that is threatened by landslides. A three dimensional (3D) slope stability analysis has emerged recently due to its capability of capturing complex terrain shape in more realistic manners, rather than two-dimensional (2D) approach. The Hovland method is one of the 3D slope stability analysis widely used due to its simple algorithm and practical engineering application. Previous studies have proposed modifying Hovland’s method and integrating it with Geographic Information System (GIS) software to make it practical to be used in a real environment. However, scarce attention has been paid to improve 3D slope stability analysis and to take into account the influence of rainfall induced landslide. This is due to the dynamic behaviour and complex parameters involved. For regions with tropical climate like Malaysia, the study of rainfall induced landslide is crucial due to the many landslide incidents triggered by heavy rainfall. This paper seeks to address this problem by adding the rainfall factor as input to Hovland 3D slope stability analysis in the form of pore water pressure. Rainfall volume can be transformed into infiltration and surface runoff, such as the Infiltrated Excess Overland Flow (IEOF) and Saturated Excess Overland Flow (SEOF). This study only focuses on SEOF as a dynamic variable by using the Topographic Wetness Index (TWI) and Green-Ampt as input for SEOF equation and SEOF later used in pore water pressure computational replacing static water table level. The result of this research is an improved Hovland 3D slope stability analysis method by integrating SEOF factor in the calculation. 2015-08 Conference or Workshop Item PeerReviewed application/pdf en http://eprints.usm.my/35121/1/PPIK27.pdf Keling, Noraidah and Yusoff, Izham Mohamad and Lateh, Habibah and Ujang, Uznir (2015) The influence of surface run-off to 3d slope stability analysis for rainfall induced landslide. In: International Conference on Development and Socio Spatial Inequalities 2015, 19 – 20 August 2015, Pulau Pinang, Malaysia.
institution Universiti Sains Malaysia
building Hamzah Sendut Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Sains Malaysia
content_source USM Institutional Repository
url_provider http://eprints.usm.my/
language English
topic H Social Sciences (General)
spellingShingle H Social Sciences (General)
Keling, Noraidah
Yusoff, Izham Mohamad
Lateh, Habibah
Ujang, Uznir
The influence of surface run-off to 3d slope stability analysis for rainfall induced landslide
description Expansion of urban and recreational developments in hilly areas has resulted in increasing number of residential, commercial properties and infrastructure that is threatened by landslides. A three dimensional (3D) slope stability analysis has emerged recently due to its capability of capturing complex terrain shape in more realistic manners, rather than two-dimensional (2D) approach. The Hovland method is one of the 3D slope stability analysis widely used due to its simple algorithm and practical engineering application. Previous studies have proposed modifying Hovland’s method and integrating it with Geographic Information System (GIS) software to make it practical to be used in a real environment. However, scarce attention has been paid to improve 3D slope stability analysis and to take into account the influence of rainfall induced landslide. This is due to the dynamic behaviour and complex parameters involved. For regions with tropical climate like Malaysia, the study of rainfall induced landslide is crucial due to the many landslide incidents triggered by heavy rainfall. This paper seeks to address this problem by adding the rainfall factor as input to Hovland 3D slope stability analysis in the form of pore water pressure. Rainfall volume can be transformed into infiltration and surface runoff, such as the Infiltrated Excess Overland Flow (IEOF) and Saturated Excess Overland Flow (SEOF). This study only focuses on SEOF as a dynamic variable by using the Topographic Wetness Index (TWI) and Green-Ampt as input for SEOF equation and SEOF later used in pore water pressure computational replacing static water table level. The result of this research is an improved Hovland 3D slope stability analysis method by integrating SEOF factor in the calculation.
format Conference or Workshop Item
author Keling, Noraidah
Yusoff, Izham Mohamad
Lateh, Habibah
Ujang, Uznir
author_facet Keling, Noraidah
Yusoff, Izham Mohamad
Lateh, Habibah
Ujang, Uznir
author_sort Keling, Noraidah
title The influence of surface run-off to 3d slope stability analysis for rainfall induced landslide
title_short The influence of surface run-off to 3d slope stability analysis for rainfall induced landslide
title_full The influence of surface run-off to 3d slope stability analysis for rainfall induced landslide
title_fullStr The influence of surface run-off to 3d slope stability analysis for rainfall induced landslide
title_full_unstemmed The influence of surface run-off to 3d slope stability analysis for rainfall induced landslide
title_sort influence of surface run-off to 3d slope stability analysis for rainfall induced landslide
publishDate 2015
url http://eprints.usm.my/35121/1/PPIK27.pdf
http://eprints.usm.my/35121/
_version_ 1643708404416380928
score 13.211869

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