<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Backward erosion piping is driven by seepage forces acting on the soil grains at the downstream end of the seepage path. A new device for the laboratory testing of backward erosion progression was developed and tested. The device consists of a plexiglass prism at which the seepage path has been predefined. The prism was equipped with an inflow consisting of gravel separated from tested sand by a strainer. The hydraulic gradient along the seepage pipe was observed by a set of piezometers and pressure cells, and the seepage discharge was measured volumetrically. The transported sediment was trapped in a vertical cone located downstream from the device. The progression of the seepage path, the piezometric heads and the trapped material was observed by two synchronous cameras. 15 trial tests have been carried out to date, and from these, the interim results are presented.</p>
</abstract>

Backward erosion piping is driven by seepage forces acting on the soil grains at the downstream end of the seepage path. A new device for the laboratory testing of backward erosion progression was developed and tested. The device consists of a plexiglass prism at which the seepage path has been predefined. The prism was equipped with an inflow consisting of gravel separated from tested sand by a strainer. The hydraulic gradient along the seepage pipe was observed by a set of piezometers and pressure cells, and the seepage discharge was measured volumetrically. The transported sediment was trapped in a vertical cone located downstream from the device. The progression of the seepage path, the piezometric heads and the trapped material was observed by two synchronous cameras. 15 trial tests have been carried out to date, and from these, the interim results are presented.

A new small-scale experimental device for testing backward erosion piping

Journal of Hydrology and Hydromechanics

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"A new small-scale experimental device for testing backward erosion piping"}

Backward erosion piping is driven by seepage forces acting on the soil grains at the downstream end of the seepage path. A new device for the laboratory...

A new small-scale experimental device for testing backward erosion piping

Publié en ligne: 23 août 2022

Pages: 376 - 384

Reçu: 24 mars 2022

Accepté: 02 août 2022

DOI: https://doi.org/10.2478/johh-2022-0023

Mots clés
Backward erosion piping, Seepage, Experimental research, Critical hydraulic gradient

© 2022 Lubomír Petrula et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

A new small-scale experimental device for testing backward erosion piping

Publié en ligne: 23 août 2022

Pages: 376 - 384

Reçu: 24 mars 2022

Accepté: 02 août 2022

DOI: https://doi.org/10.2478/johh-2022-0023

Mots clésBackward erosion piping, Seepage, Experimental research, Critical hydraulic gradient

© 2022 Lubomír Petrula et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
Backward erosion piping, Seepage, Experimental research, Critical hydraulic gradient