| Titre : | Investigating concentrated leak erosion behaviour of cohesive soils by performing hole erosion tests (2012) |
| Auteurs : | Nadia Benahmed, Auteur ; Stéphane Bonelli, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | European journal of environmental and civil engineering (Vol. 16 N° 1, Janvier 2012) |
| Article en page(s) : | pp. 43-58 |
| Note générale : | Génie Civil |
| Langues : | Anglais |
| Tags : | Internal erosion Piping Experimental study Cohesive soils Critical shear stress Rate of Hydraulic works |
| Résumé : | Internal erosion by piping is one of the common causes of failure of embankment dams and dykes. This phenomenon occurs when preferential flow paths develop in the earthfill or foundation; through these water flows, carrying away particles of soil and leading to the formation and the evolution of a continuous ‘pipe’ between the upstream and the downstream side. A series of hole erosion tests were conducted on cohesive soils in order to quantify critical shear stress and the coefficient of erosion: white kaolinite, proclay kaolinite and a hostun sand/proclay kaolinite mixture. The effects of compaction energy, moisture content, degree of saturation and the percentage of fines were investigated. The experimental results show that these parameters play a key role in the erosion characteristics. |
| DEWEY : | 624 |
| ISSN : | 1964-8189 |
| En ligne : | http://www.tandfonline.com/doi/abs/10.1080/19648189.2012.667667 |
