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Soil-root interaction and effects on slope stability analysis

Ali, N., Farshchi, I., Mu'azu, M. A. and Rees, Stephen William 2012. Soil-root interaction and effects on slope stability analysis. Electronic Journal of Geotechnical Engineering (EJGE) 17 (C) , pp. 319-328.

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Abstract

This work combines the mechanical and hydrological effects of vegetation with a slope stability framework. The analysis provides further understanding of the effects of vegetation on slope stability analysis. From the results obtained, trees contribute to the stability of sloping ground both hydrologically as a result of increase in matric suction of the soil resulting in a increase in the shear strength while mechanically is due to root reinforcement, the shear strength of the rooted soil mass is enhanced due to the presence of a root matrix. It is found that the most significant benefit is likely to be achieved only when the tree is located at the toe of the slope. The results indicate that the Factor of Safety against failure can increase by more than 8% when including the influence of a mature tree located at toe of a slope. The results also indicate that the mechanical contribution to strength offered by vegetation is much greater than the influence of hydrological effects.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TD Environmental technology. Sanitary engineering
Uncontrolled Keywords: Roots; Soil; Suction; Slope stability; Trees; Vegetation
Publisher: World Wide Web of Geotechnical Engineers
ISSN: 1089-3032
Last Modified: 04 Jun 2017 04:19
URI: http://orca-mwe.cf.ac.uk/id/eprint/36909

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