Slope stability analysis of granitic residual soil using Slope/W, resistivity and seismic

Research output: Contribution to journalArticle

Abstract

There are many factors that influence slope failure such as natural disasters and human activities. Amongst the major causes are the rise of groundwater and infiltration of prolonged and antecedent rainfalls. Together with its geographical condition; high lands and mountains, Malaysia is prone to have landslides especially at the Main Range area where most of the soil is residual soil. This study investigated a slope which had a history of landslide due to circular failure landslide using Slope/W, resistivity and seismic surveys to determine the physical and mechanical properties of the on-site materials. Based on the resistivity survey, the existence of groundwater level has been detected at a depth of 10.0 m from the ground level. Seismic analysis showed that the subsurface area was made up of Weathered Granite Grade VI (sandy soil) which is loose to medium dense. SLOPE/W analysis showed that the factor of safety (FOS) was 0.186 which was unstable for slope stability condition. The assessment showed that the slope condition is still not stable despite slope stabilization measurement using cement grouting. It is proposed that erosion control measures on the slope surface should be implemented to prevent recurrent of slope failure and to ensure slope stability.

Original languageEnglish
Pages (from-to)172-176
Number of pages5
JournalInternational Journal of Engineering and Technology(UAE)
Volume7
Issue number4
DOIs
Publication statusPublished - 01 Jan 2018

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Landslides
Slope stability
Soil
Groundwater
Soils
Grouting
Granite
Malaysia
Disasters
Infiltration
Human Activities
Statistical Factor Analysis
Rain
Erosion
Cements
Stabilization
Physical properties
Safety
Mechanical properties
Surveys and Questionnaires

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Computer Science (miscellaneous)
  • Environmental Engineering
  • Chemical Engineering(all)
  • Engineering(all)
  • Hardware and Architecture

Cite this

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title = "Slope stability analysis of granitic residual soil using Slope/W, resistivity and seismic",
abstract = "There are many factors that influence slope failure such as natural disasters and human activities. Amongst the major causes are the rise of groundwater and infiltration of prolonged and antecedent rainfalls. Together with its geographical condition; high lands and mountains, Malaysia is prone to have landslides especially at the Main Range area where most of the soil is residual soil. This study investigated a slope which had a history of landslide due to circular failure landslide using Slope/W, resistivity and seismic surveys to determine the physical and mechanical properties of the on-site materials. Based on the resistivity survey, the existence of groundwater level has been detected at a depth of 10.0 m from the ground level. Seismic analysis showed that the subsurface area was made up of Weathered Granite Grade VI (sandy soil) which is loose to medium dense. SLOPE/W analysis showed that the factor of safety (FOS) was 0.186 which was unstable for slope stability condition. The assessment showed that the slope condition is still not stable despite slope stabilization measurement using cement grouting. It is proposed that erosion control measures on the slope surface should be implemented to prevent recurrent of slope failure and to ensure slope stability.",
author = "{Che Omar}, Rohayu and Baharuddin, {Intan Nor Zuliana} and Hairin Taha and Rasyikin Roslan and {Nor Khalid}, {Nor Hazwani} and Muzad, {M. F.}",
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AU - Roslan, Rasyikin

AU - Nor Khalid, Nor Hazwani

AU - Muzad, M. F.

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AB - There are many factors that influence slope failure such as natural disasters and human activities. Amongst the major causes are the rise of groundwater and infiltration of prolonged and antecedent rainfalls. Together with its geographical condition; high lands and mountains, Malaysia is prone to have landslides especially at the Main Range area where most of the soil is residual soil. This study investigated a slope which had a history of landslide due to circular failure landslide using Slope/W, resistivity and seismic surveys to determine the physical and mechanical properties of the on-site materials. Based on the resistivity survey, the existence of groundwater level has been detected at a depth of 10.0 m from the ground level. Seismic analysis showed that the subsurface area was made up of Weathered Granite Grade VI (sandy soil) which is loose to medium dense. SLOPE/W analysis showed that the factor of safety (FOS) was 0.186 which was unstable for slope stability condition. The assessment showed that the slope condition is still not stable despite slope stabilization measurement using cement grouting. It is proposed that erosion control measures on the slope surface should be implemented to prevent recurrent of slope failure and to ensure slope stability.

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