Effects of slope inclination on the rain-induced instability of embankment slopes

Gallage, C., Jayakody, S., & Uckimura, Taro (2012) Effects of slope inclination on the rain-induced instability of embankment slopes. In Hossain, Md. Zakaria & Huat, Bujang B.K. (Eds.) Proceedings of the Second International Conference on Geotechnique, Construction Materials and Environment, The GEOMATE International Society, Kuala Lumpur, Malaysia, pp. 196-201.

Abstract

Rainfall has been identified as one of the main causes for embankment failures in areas where high annual rainfall is experienced. The inclination of the embankment slope is important for its stability during rainfall. In this study, instrumented model embankments were subjected to artificial rainfalls to investigate the effects of the slope inclination on their stability. The results of the study suggested that when the slope inclination is greater than the friction angle of the soil, the failure is initiated by the loss of soil suction and when it is smaller than the friction angle of the soil, the failure is initiated by the positive pore water pressure developed at the toe of the slope. Further, slopes become more susceptible to sudden collapse during rainfall as the slope angle increases.

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ID Code: 58167
Item Type: Conference Paper
Refereed: Yes
Keywords: Embankment Model Tests, Instrumentation, Soil Suction, Transient Seepage, Rain-induced Slope Failures
ISBN: 9784990595814
Divisions: Current > Schools > School of Earth, Environmental & Biological Sciences
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2012 Please consult the author.
Deposited On: 13 Mar 2013 02:57
Last Modified: 18 Mar 2013 14:45

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