APPLICATION DES TECHNIQUES ERT ET SISMIQUE RÉFRACTION POUR LA CARACTÉRISATION DE SITES EN AMONT DES PROJETS DE CONSTRUCTION : CAS DU SITE DE SONGON (COTE D'IVOIRE)

The aim of this work is to characterize the subsurface using a combination of geophysical methods in order to reduce risk of building collapse in Abidjan, Côte d’Ivoire. ERT was carried out at selected sites using a Syscal Pro resistivity meter and refraction seismic using the GEA 24 seismograph. The depth investigated is around 10 meters. The results showed a correlation between electrical resistivity, seismic velocity, rigidity and compressibility. This has made it possible to identify areas at risk so that appropriate measures can be taken when building projects are carried out.