@article{fdi:010070011,
  title = {{I}ntegration of geotechnical and geophysical techniques for the characterization of a small earth-filled canal dyke and the localization of water leakage},
  author = {{B}i{\`e}vre, {G}. and {L}acroix, {P}ascal and {O}xarango, {L}. and {G}outaland, {D}. and {M}onnot, {G}. and {F}argier, {Y}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his paper investigates the combined use of extensive geotechnical, hydrogeological and geophysical techniques to assess a small earth dyke with a permanent hydraulic head, namely a canal embankment. {T}he experimental site was chosen because of known issues regarding internal erosion and piping phenomena. {T}wo leakages were visually located following the emptying of the canal prior to remediation works. {T}he results showed a good agreement between the geophysical imaging techniques ({E}lectrical {R}esistivity {T}omography, {P}- and {SH}-waves {T}omography) and the geotechnical data to detect the depth to the bedrock and its lateral variations. {I}t appeared that surface waves might not be fully adapted for dyke investigation because of the particular geometry of the studied dyke, non-respectful of the 10 assumption, and which induced depth and velocity discrepancies retrieved from {R}ayleigh and {L}ove waves inversion. {T}he use of these classical prospecting techniques however did not allow to directly locate the two leakages within the studied earth dyke. {T}he analysis of ambient vibration time series with a modified beam-forming algorithm allowed to localize the most energetic water flow prior to remediation works. {I}t was not possible to detect the leakage after remediation works, suggesting that they efficiently contributed to significantly reduce the water flow. {T}he second leakage was not detected probably because of a non-turbulent water flow, generating few energetic vibrations.},
  keywords = {{E}arth-filled canal dyke ; {W}ater head ; {G}eometry ; {L}eakage ; {I}nternal erosion ; {G}eophysics ; {FRANCE}},
  booktitle = {},
  journal = {{J}ournal of {A}pplied {G}eophysics},
  volume = {139},
  numero = {},
  pages = {1--15},
  ISSN = {0926-9851},
  year = {2017},
  DOI = {10.1016/j.jappgeo.2017.02.002},
  URL = {https://www.documentation.ird.fr/hor/fdi:010070011},
}