Application of electrical resistivity method to detect deep cracks in unsaturated residual soil slope

E. A. Suryo*, C. Gallage, B. Trigunarsyah, I. B. Mochtar, R. A.A. Soemitro

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Crack is a significant influential factor in soil slope that could leads to rainfall-induced slope instability. Existence of cracks at soil surface will decrease the shear strength and increase the hydraulic conductivity of soil slope. Although previous research has shown the effect of surface-cracks in soil stability, the influence of deep-cracks on soil stability is still unknown. The limited availability of deep crack data due to the difficulty of effective investigate methods could be one of the obstacles. Current technology in electrical resistivity can be used to detect deep-cracks in soil. This paper discusses deep cracks in unsaturated residual soil slopes in Indonesia using electrical resistivity method. The field investigation such as bore hole and SPT tests was carried out at multiple locations in the area where the electrical resistivity testing have been conducted. Subsequently, the results from bore-hole and SPT test were used to verify the results of the electrical resistivity test. This study demonstrates the benefits and limitations of the electrical resistivity in detecting deep-cracks in a residual soil slopes.

Original languageEnglish
Title of host publication5th Asia-Pacific Conference on Unsaturated Soils 2012
Pages741-746
Number of pages6
Publication statusPublished - 2012
Event5th Asia-Pacific Conference on Unsaturated Soils 2012 - Pattaya, Thailand
Duration: 29 Feb 20122 Mar 2012

Publication series

Name5th Asia-Pacific Conference on Unsaturated Soils 2012
Volume2

Conference

Conference5th Asia-Pacific Conference on Unsaturated Soils 2012
Country/TerritoryThailand
CityPattaya
Period29/02/122/03/12

Keywords

  • Bore-hole data
  • Deep cracks
  • Electrical resistivity method
  • Residual soil slope
  • SPT N-value

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