GEOFCAN : actes du 2ème colloque de géophysique des sols et des formations superficielles : résumés étendus

A geophysical survey has been conducted in Siem Reap province of Cambodia. The aim was to test DC, TDEM and PMR methods to improve the borehole success rate. The preliminary results lead to the proposition of an implementation methodology which can be described as follows : 1) to use direct current methods (1D and 2D) in any case, as standard methods ; 2) to use jointly PMR, DC and TDEM methods, when the borehole success rate is less than 30% ; 3) to use jointly direct current and TDEM methods, when the success rate ranges 30 to 50% ; 4) to use electrical well logging (normal probes) to implement the borehole screens. (Résumé d'auteur