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Slope Stability and Vegetation | OMICS International | Abstract
ISSN: 2168-9717

Journal of Architectural Engineering Technology
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Research Article

Slope Stability and Vegetation

Maria Charlafti*

Rail Bridge Engineer, CH2M HILL, London, United Kingdom

*Corresponding Author:
Maria Charlafti
Rail Bridge Engineer
CH2M HILL, London-W67EF, United Kingdom
Tel: +44203479 8000
E-mail: [email protected]

Received July 18, 2014; Accepted November 20, 2014; PublishedNovember 27, 2014

Citation: Charlafti M (2014) Slope Stability and Vegetation. J Archit Eng Tech 3:134. doi:10.4172/2168-9717.1000134

Copyright: © 2014 Charlafti M. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

This study explores issues related to vegetation effects in slope stability analysis. The main objective of this research was to assess the influences of suction in the stability of slopes. A slope inclination of 1:2 was tested in all cases using SLOPE/W which is sophisticated software with useful features, including suction parameter. Therefore, slope stability analysis was achieved with the usage of this sophisticated software so as to simplify the mathematical processes which are time-consuming. The analysis was based on the Mohr-Coulomb equation arranged appropriately so as to include suction effects. Field measurements recorded by Biddle for mature trees placed on clay subsoil were used to measure the suction effects for each case. Overall, a satisfactory association between field data and results was achieved. For the cases considered, it was indicated that moderately small suction changes from 18 to 39 kPa can influence the safety factor against failure of the slope. All of the analyses showed that the slope model was stable in each case, since safety factor ranged from 1.689 to 4.750. Under undrained conditions Gault clay was found to have a minimum safety factor of 2.553. Suction effects were found to increase the stability of slopes. In the unsaturated analysis, it was found that as jb increased the FOS also increased. Moreover, London clay was found to have a minimum FOS of 2.303 when tested with the effects of matric suction.

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