Conference Proceedings

Micro scale study of internal erosion using 3d x-ray tomography

A Mehdizadeh, MM Disfani

Scour and Erosion IX - Proceedings of the 9th International Conference on Scour and Erosion, ICSE 2018 | Published : 2019

Abstract

© 2019 Taylor & Francis Group, London. Internal erosion is held to be one of the main reasons for embankment dams’ failure and has been classified into four mechanisms of concentrated leaks, backward erosion, contact erosion and suffusion. The focus of this research is suffusion, known as migration of non-plastic fine particles through pre-existing pores between coarse particles caused by seepage flow. Laboratory tests can determine the consequences of internal erosion on behavior of granular soils in macro scale. However, this impact cannot be understood without micro-analysis of the soil structure and the changes caused by erosion. This can be achieved by 3D X-ray tomography of soil specim..

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