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Détection et évaluation des fuites à travers les ouvrages hydrauliques en remblai, par analyse des températures réparties, mesurées par fibre optique

Abstract : Leakages through embankment dams are early warning signs of a sealing malfunction and couldlead to its breakdown. Early detection of leakages and their quanti_cation is essential.High output geophysical and thermometric methods provide some answers for leakage detectionalong long linear embankment dams, but their velocity estimations necessary to assess the danger ofleakages, is not yet satisfactory.This study focuses on the detection and the quanti_cation of leakages through embankment damsunder hydraulic head. The proposed method use natural temperature measurements from the groundusing optical _ber buried under the upstream or downstream face.Two models of quanti_cation were developed and tested on data from an experimental site and a realsite. Results are consistent with velocity measurements made at both side.
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Submitted on : Monday, July 30, 2012 - 3:07:15 PM
Last modification on : Friday, March 25, 2022 - 9:43:19 AM
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Pierre Cunat. Détection et évaluation des fuites à travers les ouvrages hydrauliques en remblai, par analyse des températures réparties, mesurées par fibre optique. Autre. Université de Grenoble, 2012. Français. ⟨NNT : 2012GRENI007⟩. ⟨tel-00721827⟩

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