1509

Analysis of Slope Instability along an International Road in North Africa

Article

Last updated: 05 Jan 2025

Subjects

-

Tags

Landslides
Slope Stability
Clay
Residual strength
Analysis of Slope Instability along an International Road in North Africa
ICASGE'23

Abstract

Number of observed landslides incidences is documented along an international road in North Africa (Algeria). The instability incidences had to be dealt with during the development along the road by doubling the direction of traffic. The presence of the clays and/or colluviums deposits over marls base layer is the main explanation for the failure. At the described sliding area, the slip surface starts from the vertical crack at the edge of the road and extends down to the interface between the Clay and the Marl. The slip surface follows the Clay-Marl interface down to the toe of the slope. The geometry of the slip surface at the sites is confirmed based on boreholes drilling and dynamic penetration resistance profiles. Stability analysis of the slide is carried out using the residual drained strength along Clay-Marl interface. Intact to fully soften drained strength is used on the slip surface at locations other than the clay-Marl interface. The aim of this paper is to document; a) one of the observed landslides areas along the road, b) the investigation carried out to characterize the ground conditions as well as the geometry of the instability surfaces, c) the analysis carried out to determine the possible causes of the instability, and d) the potential solutions to stabilize the landslides area.

Keywords

Landslides, Slope Stability, Clay, Residual strength

Authors

First Name

Marawan

Last Name

Shahien

Affiliation

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Email

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City

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Orcid

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First Name

Waleed

Last Name

Ogila

Affiliation

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Email

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City

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Orcid

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Volume

ICASGE2017

Issue Date

1 Jan 2017

Publish Date

29 May 2022

Link

https://icasge.conferences.ekb.eg/article_1509.html

Order

238

Publication Type

Conference

Publication Title

ICASGE'23

Publication Link

https://icasge.conferences.ekb.eg/

Details

Type

Article

Locale

en

Created At

13 Dec 2022