Detection of buried tree root samples by electrical measurements
Détection d'échantillons de racines enterrés par mesures électriques
Résumé
Trees growing on earth dikes generate safety problems and reduce dikes durability. Root systems generate internal and external erosion risks which can be important on wooded dikes. The aim of this study was to differentiate various root samples of trees rooted in dikes by geo-electrical measurements. Before proceeding to roots detection in situ, it is necessary to make tests in laboratory. The objective of this experiment is to characterize exactly the electrical signal of buried roots according to root samples orientation and depth and to materials type. Root samples were buried in plastic boxes in different type of dyke materials. Electrical conductivity measurements were carried out on buried root samples with their complete structure.