2015
DOI: 10.1680/geot.14.p.119
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Developments in modelling of backward erosion piping

Abstract: One of the failure mechanisms that can affect the safety of a dyke or another water-retaining structure is backward erosion piping, a phenomenon that results in the formation of shallow pipes at the interface of a sandy or silty foundation and a cohesive cover layer. The models available for predicting the critical head at which the pipe progresses to the upstream side have been validated and adapted on the basis of experiments with two-dimensional (2D) configurations. However, the experimental base for backwa… Show more

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Cited by 70 publications
(29 citation statements)
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“…The process of backward erosion piping was investigated by means of small-scale experiments with circular outlet configuration, which have been described in detail in Van Beek et al (2015). The experiments were performed using a setup consisting of a rigid box filled with sand covered by a transparent plate, a water supply system and several riser tubes to measure pore pressure at various locations in the sand sample (Figs 2, 3).…”
Section: Setup and Methodsmentioning
confidence: 99%
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“…The process of backward erosion piping was investigated by means of small-scale experiments with circular outlet configuration, which have been described in detail in Van Beek et al (2015). The experiments were performed using a setup consisting of a rigid box filled with sand covered by a transparent plate, a water supply system and several riser tubes to measure pore pressure at various locations in the sand sample (Figs 2, 3).…”
Section: Setup and Methodsmentioning
confidence: 99%
“…Lengthening of the pipe restarted only after a significant increase of head and it developed towards the upstream side of the setup without any further head increase. In the other experiments stepwise increase of head resulted In order to evaluate the effect of macro-scale variation in grain size in the path of the pipe on piping resistance, experiments with macro-scale heterogeneity were compared to tests conducted by Van Beek et al (2015) in which equivalent homogeneous fine sand samples have been used. The critical head for piping progression of these experiments is plotted in Figure 9.…”
Section: Macro-scale Heterogeneity Experimentsmentioning
confidence: 99%
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