<abstract xmlns="http://www.w3.org/1999/xhtml">A large single-ring infiltrometer test was performed in order to characterize the saturated hydraulic conductivity below an infiltration basin in the well field of Lyon (France). Two kinds of data are recorded during the experiment: the volume of water infiltrated over time and the extension of the moisture stain around the ring. Then numerical analysis was performed to determine the saturated hydraulic conductivity of the soil by calibration.Considering an isotropic hydraulic conductivity, the saturated hydraulic conductivity of the alluvial deposits is estimated at 3.8 10−6 m s−1. However, with this assumption, we are not able to represent accurately the extension of the moisture stain around the ring. When anisotropy of hydraulic conductivity is introduced, experimental data and simulation results are in good agreement, both for the volume of water infiltrated over time and the extension of the moisture stain. The vertical saturated hydraulic conductivity in the anisotropic configuration is 4.75 times smaller than in the isotropic configuration (8.0 10−7 m s−1), and the horizontal saturated hydraulic conductivity is 125 times higher than the vertical saturated hydraulic conductivity (1.0 10−4 m s−1).</abstract>

A large single-ring infiltrometer test was performed in order to characterize the saturated hydraulic conductivity below an infiltration basin in the well field of Lyon (France). Two kinds of data are recorded during the experiment: the volume of water infiltrated over time and the extension of the moisture stain around the ring. Then numerical analysis was performed to determine the saturated hydraulic conductivity of the soil by calibration.Considering an isotropic hydraulic conductivity, the saturated hydraulic conductivity of the alluvial deposits is estimated at 3.8 10−6 m s−1. However, with this assumption, we are not able to represent accurately the extension of the moisture stain around the ring. When anisotropy of hydraulic conductivity is introduced, experimental data and simulation results are in good agreement, both for the volume of water infiltrated over time and the extension of the moisture stain. The vertical saturated hydraulic conductivity in the anisotropic configuration is 4.75 times smaller than in the isotropic configuration (8.0 10−7 m s−1), and the horizontal saturated hydraulic conductivity is 125 times higher than the vertical saturated hydraulic conductivity (1.0 10−4 m s−1).

Estimation of saturated hydraulic conductivity from ring infiltrometer test taking into account the surface moisture stain extension

Direction de l’Eau de la Métropole de Lyon – Le Triangle

Journal of Hydrology and Hydromechanics

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

A large single-ring infiltrometer test was performed in order to characterize the saturated hydraulic conductivity below an infiltration basin in the well...

Estimation of saturated hydraulic conductivity from ring infiltrometer test taking into account the surface moisture stain extension

Online veröffentlicht: 22. Juli 2017

Seitenbereich: 321 - 324

Eingereicht: 14. Juli 2016

Akzeptiert: 11. Feb. 2017

DOI: https://doi.org/10.1515/johh-2017-0019

Schlüsselwörter
Ring infiltrometer test, Infiltration basin, Numerical modeling, Saturated hydraulic conductivity, Anisotropy of hydraulic conductivity

© 2017 Aurore Réfloch et al., published by De Gruyter Open

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

Estimation of saturated hydraulic conductivity from ring infiltrometer test taking into account the surface moisture stain extension

Online veröffentlicht: 22. Juli 2017

Seitenbereich: 321 - 324

Eingereicht: 14. Juli 2016

Akzeptiert: 11. Feb. 2017

DOI: https://doi.org/10.1515/johh-2017-0019

SchlüsselwörterRing infiltrometer test, Infiltration basin, Numerical modeling, Saturated hydraulic conductivity, Anisotropy of hydraulic conductivity

© 2017 Aurore Réfloch et al., published by De Gruyter Open

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

Schlüsselwörter
Ring infiltrometer test, Infiltration basin, Numerical modeling, Saturated hydraulic conductivity, Anisotropy of hydraulic conductivity