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3D character of backward erosion piping

(2018) GEOTECHNIQUE . 68(1). p.86-90
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Abstract
Backward erosion piping is an important failure mechanism for cohesive water-retaining structures which are founded on a sandy aquifer. Nowadays, piping research and safety assessments are often based on experimental or numerical modelling using arbitrary model widths or even two-dimensional (2D) assumptions. This technical note shows the influence of this limitation through a series of small-scale experiments with varying model widths. The flow pattern proves to be highly three-dimensional (3D), influencing both the pipe geometry and critical gradients leading to piping failure. A 2D model is unable to capture the important aspects of the erosion mechanism and a correction factor needs to be applied if the minimum width for correctly simulating a 3D situation is not accomplished.
Keywords
embankments, erosion, model tests, numerical modelling, sands, water flow

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Citation

Please use this url to cite or link to this publication:

Chicago
Vandenboer, Kristine, VM van Beek, and Adam Bezuijen. 2018. “3D Character of Backward Erosion Piping.” Geotechnique  68 (1): 86–90.
APA
Vandenboer, K., van Beek, V., & Bezuijen, A. (2018). 3D character of backward erosion piping. GEOTECHNIQUE  , 68(1), 86–90.
Vancouver
1.
Vandenboer K, van Beek V, Bezuijen A. 3D character of backward erosion piping. GEOTECHNIQUE  . 2018;68(1):86–90.
MLA
Vandenboer, Kristine, VM van Beek, and Adam Bezuijen. “3D Character of Backward Erosion Piping.” GEOTECHNIQUE  68.1 (2018): 86–90. Print.
@article{8532353,
  abstract     = {Backward erosion piping is an important failure mechanism for cohesive water-retaining structures which are founded on a sandy aquifer. Nowadays, piping research and safety assessments are often based on experimental or numerical modelling using arbitrary model widths or even two-dimensional (2D) assumptions. This technical note shows the influence of this limitation through a series of small-scale experiments with varying model widths. The flow pattern proves to be highly three-dimensional (3D), influencing both the pipe geometry and critical gradients leading to piping failure. A 2D model is unable to capture the important aspects of the erosion mechanism and a correction factor needs to be applied if the minimum width for correctly simulating a 3D situation is not accomplished.},
  author       = {Vandenboer, Kristine and van Beek, VM and Bezuijen, Adam},
  issn         = {0016-8505},
  journal      = {GEOTECHNIQUE                           },
  language     = {eng},
  number       = {1},
  pages        = {86--90},
  title        = {3D character of backward erosion piping},
  url          = {http://dx.doi.org/10.1680/jgeot.16.p.091},
  volume       = {68},
  year         = {2018},
}

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