STUDY OF THE LONG-TERM BEHAVIOUR OF UNDERGROUND STRUCTURES

ETUDE DU COMPORTEMENT A LONG TERME DES OUVRAGES SOUTERRAINS

TO CONTINUE THE STUDY USING STRESS AND DEFORMATION MEASUREMENTS MADE DURING DIFFERENT MEASUREMENT CAMPAIGNS. APPROXIMATELY TWENTY TUNNELS HAVE BEEN MEASURED FOR DEFORMATIONS. STRAIN MEASUREMENTS WERE TAKEN IN APPROXIMATELY FIFTEEN UNDERGROUND STRUCTURES, SOME OF WHICH WERE ALSO THE SUBJECT OF SURVEILLANCE FOR DEFORMATION PHENOMENA. ANALYSIS OF RESULTS OF MEASUREMENTS TAKEN IN THE DIFFERENT STRUCTURES STUDIED IS AN IMPORTANT MEANS OF STUDYING THE LONG-TERM BEHAVIOUR OF UNDERGROUND STRUCTURES.