Probability of Transportation of Loose Particles in Suffusion Assessment by Self-Filtration Criteria
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VIEW THE REPLYPublication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 142, Issue 2
Abstract
Suffusion occurs when soil particles are loosened, detached, and transported away by seepage flow through a series of pores and pore constrictions. While traditional suffusion assessment methods are often based on particle size distribution analysis only, modern assessment methods are focused on constriction size distributions, which are derived from particle size distributions based on certain assumptions. This paper provides a new assessment method, which employs the probability of loose particles being transported to the next pore. The new approach can introduce the influence of an overlapping zone between the two fractions of loose particles and soil primary fabric. This overlapping zone was often overlooked in prior studies. The constriction size distribution of the primary fabric can be calculated approximately by two-dimensional or three-dimensional methods. The three-dimensional method used in the presented study even offers the opportunity to study the influence of particle arrangements on suffusion. The results of the new assessment methods show satisfactory agreement with experimental results.
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Acknowledgments
The first author was granted a scholarship from the Ministry of Education and Training of Vietnam and The University of Queensland. The Australian Research Council (ARC) support of the project through the Discovery grant (DP120102188) “Hydraulic erosion of granular structures: Experiments and computational simulations” is gratefully acknowledged.
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Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 142 • Issue 2 • February 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Jan 17, 2015
Accepted: Jul 14, 2015
Published online: Sep 8, 2015
Published in print: Feb 1, 2016
Discussion open until: Feb 8, 2016
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