<abstract xmlns="http://www.w3.org/1999/xhtml">This study aims to assess the abilities of inclined barrier walls (BWs) to retard the migration of contaminants through porous media. Four cases of BW arrangements were considered, including a single inclined BW (<italic>BW</italic>1) and two adjacent BWs (<italic>BW</italic>1 and <italic>BW</italic>2) with different combinations of inclination ratios (i.e., <italic>I</italic>1 = θ1 /90° and <italic>I</italic>2 = θ2 /90°). Furthermore, the effect of the distance (<italic>L</italic>) between the contamination source and <italic>BW</italic>1 on the migration time (<italic>T</italic>) was evaluated. A numerical model (GeoStudio) containing two modules (SEEP/W and CTRAN/W) was used. The model proved its reliability to simulate contaminant migration through the porous media, where the normalized objective function values between the simulated and analytical results were 0.02 and 0.04 for the discharge of seepage and concentration of contamination, respectively. The results demonstrated that the migration time was strongly influenced by the inclination ratios of the BWs. Three-dimensional regression analysis was applied to demonstrate the combined effect of the inclination ratio, <italic>L</italic> and BW arrangements on <italic>T</italic>.</abstract>

This study aims to assess the abilities of inclined barrier walls (BWs) to retard the migration of contaminants through porous media. Four cases of BW arrangements were considered, including a single inclined BW (BW1) and two adjacent BWs (BW1 and BW2) with different combinations of inclination ratios (i.e., I1 = θ1 /90° and I2 = θ2 /90°). Furthermore, the effect of the distance (L) between the contamination source and BW1 on the migration time (T) was evaluated. A numerical model (GeoStudio) containing two modules (SEEP/W and CTRAN/W) was used. The model proved its reliability to simulate contaminant migration through the porous media, where the normalized objective function values between the simulated and analytical results were 0.02 and 0.04 for the discharge of seepage and concentration of contamination, respectively. The results demonstrated that the migration time was strongly influenced by the inclination ratios of the BWs. Three-dimensional regression analysis was applied to demonstrate the combined effect of the inclination ratio, L and BW arrangements on T.

Retarding contaminant migration through porous media using inclined barrier walls

Civil Engineering Department, Faculty of Engineering

Department of Civil and Environmental Engineering, Tokyo Institute of Technology

Journal of Hydrology and Hydromechanics

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

This study aims to assess the abilities of inclined barrier walls (BWs) to retard the migration of contaminants through porous media. Four cases of BW...

Retarding contaminant migration through porous media using inclined barrier walls

Published Online: Nov 15, 2019

Page range: 339 - 348

Received: Dec 03, 2018

Accepted: Mar 19, 2019

DOI: https://doi.org/10.2478/johh-2019-0020

Keywords
Contaminant migration, Advection-diffusion, Inclined barrier walls, Finite element, GeoStudio

© 2019 Ayman Allam et al., published by Sciendo

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

Retarding contaminant migration through porous media using inclined barrier walls

Published Online: Nov 15, 2019

Page range: 339 - 348

Received: Dec 03, 2018

Accepted: Mar 19, 2019

DOI: https://doi.org/10.2478/johh-2019-0020

KeywordsContaminant migration, Advection-diffusion, Inclined barrier walls, Finite element, GeoStudio

© 2019 Ayman Allam et al., published by Sciendo

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

Keywords
Contaminant migration, Advection-diffusion, Inclined barrier walls, Finite element, GeoStudio