Modeling of shallow slope failure using curved-surface envelope extended Mohr-Coulomb model

M. J. Md. Noor, B. A. Hadi, Mohamed Ahmed Hafez Ahmed

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Shallow slope failure is very close associated with surface water infiltration. The infiltration soaked the soil near the ground surface which reduces the suction and in turn reduces the apparent shear strength and thereby reduces the failure resisting factor. Simultaneously the soil bulk weight increases which thereby increases the failure driving factor. The changes in the suction and net stress close to the slope surface are attributed to the cause of the failure and these changes are occurring at low stress levels. Therefore it is very significant to apply the actual soil shear strength behavior at these low stress ranges in order to understand the shallow failure behavior. The curved-surface envelope soil shear strength model is able to replicate the soil true non-linear shear strength behavior at low stress range (i.e. low suction and low net stress). The application of the shear strength model would able to simulate the shallow failure mode. A parametric study of this application will be presented to substantiate the concept.

Original languageEnglish
Title of host publicationUnsaturated Soils
Subtitle of host publicationTheoretical and Numerical Advances in Unsaturated Soil Mechanics - Proceedings of the 4th Asia Pacific Conference on Unsaturated Soils
Pages909-914
Number of pages6
Publication statusPublished - 2010
Event4th Asia Pacific Conference on Unsaturated Soils - Newcastle, NSW, Australia
Duration: 23 Nov 200925 Nov 2009

Other

Other4th Asia Pacific Conference on Unsaturated Soils
CountryAustralia
CityNewcastle, NSW
Period23/11/0925/11/09

Fingerprint

shear strength
slope failure
suction
modeling
soil
infiltration (hydrology)
infiltration
surface water
soil surface

All Science Journal Classification (ASJC) codes

  • Soil Science

Cite this

Md. Noor, M. J., Hadi, B. A., & Hafez Ahmed, M. A. (2010). Modeling of shallow slope failure using curved-surface envelope extended Mohr-Coulomb model. In Unsaturated Soils: Theoretical and Numerical Advances in Unsaturated Soil Mechanics - Proceedings of the 4th Asia Pacific Conference on Unsaturated Soils (pp. 909-914)
Md. Noor, M. J. ; Hadi, B. A. ; Hafez Ahmed, Mohamed Ahmed. / Modeling of shallow slope failure using curved-surface envelope extended Mohr-Coulomb model. Unsaturated Soils: Theoretical and Numerical Advances in Unsaturated Soil Mechanics - Proceedings of the 4th Asia Pacific Conference on Unsaturated Soils. 2010. pp. 909-914
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abstract = "Shallow slope failure is very close associated with surface water infiltration. The infiltration soaked the soil near the ground surface which reduces the suction and in turn reduces the apparent shear strength and thereby reduces the failure resisting factor. Simultaneously the soil bulk weight increases which thereby increases the failure driving factor. The changes in the suction and net stress close to the slope surface are attributed to the cause of the failure and these changes are occurring at low stress levels. Therefore it is very significant to apply the actual soil shear strength behavior at these low stress ranges in order to understand the shallow failure behavior. The curved-surface envelope soil shear strength model is able to replicate the soil true non-linear shear strength behavior at low stress range (i.e. low suction and low net stress). The application of the shear strength model would able to simulate the shallow failure mode. A parametric study of this application will be presented to substantiate the concept.",
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Md. Noor, MJ, Hadi, BA & Hafez Ahmed, MA 2010, Modeling of shallow slope failure using curved-surface envelope extended Mohr-Coulomb model. in Unsaturated Soils: Theoretical and Numerical Advances in Unsaturated Soil Mechanics - Proceedings of the 4th Asia Pacific Conference on Unsaturated Soils. pp. 909-914, 4th Asia Pacific Conference on Unsaturated Soils, Newcastle, NSW, Australia, 23/11/09.

Modeling of shallow slope failure using curved-surface envelope extended Mohr-Coulomb model. / Md. Noor, M. J.; Hadi, B. A.; Hafez Ahmed, Mohamed Ahmed.

Unsaturated Soils: Theoretical and Numerical Advances in Unsaturated Soil Mechanics - Proceedings of the 4th Asia Pacific Conference on Unsaturated Soils. 2010. p. 909-914.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AB - Shallow slope failure is very close associated with surface water infiltration. The infiltration soaked the soil near the ground surface which reduces the suction and in turn reduces the apparent shear strength and thereby reduces the failure resisting factor. Simultaneously the soil bulk weight increases which thereby increases the failure driving factor. The changes in the suction and net stress close to the slope surface are attributed to the cause of the failure and these changes are occurring at low stress levels. Therefore it is very significant to apply the actual soil shear strength behavior at these low stress ranges in order to understand the shallow failure behavior. The curved-surface envelope soil shear strength model is able to replicate the soil true non-linear shear strength behavior at low stress range (i.e. low suction and low net stress). The application of the shear strength model would able to simulate the shallow failure mode. A parametric study of this application will be presented to substantiate the concept.

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Md. Noor MJ, Hadi BA, Hafez Ahmed MA. Modeling of shallow slope failure using curved-surface envelope extended Mohr-Coulomb model. In Unsaturated Soils: Theoretical and Numerical Advances in Unsaturated Soil Mechanics - Proceedings of the 4th Asia Pacific Conference on Unsaturated Soils. 2010. p. 909-914