On Internal Erosion of the Pervious Foundation of Flood Protection Dikes
This work focuses on the mechanisms that trigger internal erosion of the pervious foundation of flood protection dikes. The origin of these permeable layers is generally attributed to the presence of a paleo-valley and paleo-channels filled with gravelly-sandy sediments beneath the river bed and dik...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/15/21/3747 |
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| author | Laurence Girolami Stéphane Bonelli Rémi Valois Naïm Chaouch Jules Burgat |
| author_facet | Laurence Girolami Stéphane Bonelli Rémi Valois Naïm Chaouch Jules Burgat |
| author_sort | Laurence Girolami |
| collection | DOAJ |
| description | This work focuses on the mechanisms that trigger internal erosion of the pervious foundation of flood protection dikes. The origin of these permeable layers is generally attributed to the presence of a paleo-valley and paleo-channels filled with gravelly-sandy sediments beneath the river bed and dikes. These layers may extend into the protected area. Visual observations of leaks, sand boils and sinkholes in the protected area testify to internal erosion processes in the underground soil. Local geological conditions are part of the information to be sought to explain these processes: presence of permeable soils and position of interfaces. Results obtained on Agly dikes (France), using two classical geophysical methods (EMI and ERT), were analyzed using cored soils and showed that it is not enough to simply conclude to the presence of backward erosion piping. The possibility of internal erosion, such as suffusion or contact erosion, must also be considered as the cause of leaks, sand boils and sinkholes. As the results obtained are explained by the presence of a paleo-valley and paleo-channels beneath the river bed and dikes—commonly encountered in this context—the methodology presented and the results obtained are likely to be relevant for many dikes. |
| first_indexed | 2024-03-11T11:19:52Z |
| format | Article |
| id | doaj.art-d4dd8270817d4913a65d320088bda54d |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-11T11:19:52Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-d4dd8270817d4913a65d320088bda54d2023-11-10T15:15:12ZengMDPI AGWater2073-44412023-10-011521374710.3390/w15213747On Internal Erosion of the Pervious Foundation of Flood Protection DikesLaurence Girolami0Stéphane Bonelli1Rémi Valois2Naïm Chaouch3Jules Burgat4RECOVER, INRAE Aix-Marseille Université, 13182 Aix-en-Provence, FranceRECOVER, INRAE Aix-Marseille Université, 13182 Aix-en-Provence, FranceEMMAH, INRAE Université de Avignon, 84914 Avignon, FranceRECOVER, INRAE Aix-Marseille Université, 13182 Aix-en-Provence, FranceRECOVER, INRAE Aix-Marseille Université, 13182 Aix-en-Provence, FranceThis work focuses on the mechanisms that trigger internal erosion of the pervious foundation of flood protection dikes. The origin of these permeable layers is generally attributed to the presence of a paleo-valley and paleo-channels filled with gravelly-sandy sediments beneath the river bed and dikes. These layers may extend into the protected area. Visual observations of leaks, sand boils and sinkholes in the protected area testify to internal erosion processes in the underground soil. Local geological conditions are part of the information to be sought to explain these processes: presence of permeable soils and position of interfaces. Results obtained on Agly dikes (France), using two classical geophysical methods (EMI and ERT), were analyzed using cored soils and showed that it is not enough to simply conclude to the presence of backward erosion piping. The possibility of internal erosion, such as suffusion or contact erosion, must also be considered as the cause of leaks, sand boils and sinkholes. As the results obtained are explained by the presence of a paleo-valley and paleo-channels beneath the river bed and dikes—commonly encountered in this context—the methodology presented and the results obtained are likely to be relevant for many dikes.https://www.mdpi.com/2073-4441/15/21/3747river dikesleveespaleo-valleypaleo-channelsleaksinternal erosion |
| spellingShingle | Laurence Girolami Stéphane Bonelli Rémi Valois Naïm Chaouch Jules Burgat On Internal Erosion of the Pervious Foundation of Flood Protection Dikes Water river dikes levees paleo-valley paleo-channels leaks internal erosion |
| title | On Internal Erosion of the Pervious Foundation of Flood Protection Dikes |
| title_full | On Internal Erosion of the Pervious Foundation of Flood Protection Dikes |
| title_fullStr | On Internal Erosion of the Pervious Foundation of Flood Protection Dikes |
| title_full_unstemmed | On Internal Erosion of the Pervious Foundation of Flood Protection Dikes |
| title_short | On Internal Erosion of the Pervious Foundation of Flood Protection Dikes |
| title_sort | on internal erosion of the pervious foundation of flood protection dikes |
| topic | river dikes levees paleo-valley paleo-channels leaks internal erosion |
| url | https://www.mdpi.com/2073-4441/15/21/3747 |
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