E_DEPRECATED Error in file »db.php« at line 1529: Function eregi() is deprecated E_DEPRECATED Error in file »check.php« at line 838: Function eregi() is deprecated E_DEPRECATED Error in file »db.php« at line 68: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead E_DEPRECATED Error in file »check.php« at line 838: Function eregi() is deprecated E_DEPRECATED Error in file »db.php« at line 1529: Function eregi() is deprecated E_DEPRECATED Error in file »check.php« at line 838: Function eregi() is deprecated E_DEPRECATED Error in file »db.php« at line 1529: Function eregi() is deprecated E_DEPRECATED Error in file »check.php« at line 838: Function eregi() is deprecated E_DEPRECATED Error in file »db.php« at line 1529: Function eregi() is deprecated E_DEPRECATED Error in file »check.php« at line 838: Function eregi() is deprecated E_DEPRECATED Error in file »db.php« at line 1529: Function eregi() is deprecated E_DEPRECATED Error in file »check.php« at line 838: Function eregi() is deprecated E_DEPRECATED Error in file »db.php« at line 1529: Function eregi() is deprecated E_DEPRECATED Error in file »check.php« at line 838: Function eregi() is deprecated E_DEPRECATED Error in file »db.php« at line 1529: Function eregi() is deprecated E_DEPRECATED Error in file »check.php« at line 838: Function eregi() is deprecated E_DEPRECATED Error in file »db.php« at line 1529: Function eregi() is deprecated E_DEPRECATED Error in file »check.php« at line 838: Function eregi() is deprecated E_DEPRECATED Error in file »db.php« at line 1529: Function eregi() is deprecated E_DEPRECATED Error in file »check.php« at line 838: Function eregi() is deprecated E_DEPRECATED Error in file »db.php« at line 1529: Function eregi() is deprecated E_DEPRECATED Error in file »check.php« at line 838: Function eregi() is deprecated E_DEPRECATED Error in file »db.php« at line 1529: Function eregi() is deprecated E_DEPRECATED Error in file »check.php« at line 838: Function eregi() is deprecated E_DEPRECATED Error in file »db.php« at line 1529: Function eregi() is deprecated E_DEPRECATED Error in file »check.php« at line 838: Function eregi() is deprecated E_DEPRECATED Error in file »db.php« at line 1529: Function eregi() is deprecated E_DEPRECATED Error in file »check.php« at line 838: Function eregi() is deprecated E_DEPRECATED Error in file »db.php« at line 1529: Function eregi() is deprecated E_DEPRECATED Error in file »check.php« at line 838: Function eregi() is deprecated Auscultation - Mesures De Convergence Optique Ou Invar.

 Auscultation - Mesures de convergence optique ou INVAR.        Retour
 
Ce système de mesures optiques offre la possibilité de mesures sans interruption de chantier.
 
En effet, les mesures de convergences en souterrain ont toujours posé problème tant en phase d’excavation qu’en phase d’exploitation. La méthode par fil Invar, malgré sa grande fiabilité, restait très rigide puisqu’elle bloquait à coup sûr l’avancement des travaux.

GASCOGNE GENIE CIVIL, constatant cet état de fait, a développé en 1993, en étroite collaboration avec la division géomécanique de Scétauroute, sa propre méthode de mesures optiques. La comparaison des résultats a mis en évidence un faible écart entre les deux types de mesures (entre 3 et 5/10 de mm).

 
Mesures au fil Invar Exemple de graphique issu des mesures de convergences

 

Infos légales - Copyright © Tous droits réservés Siti