Mobile system for seismic emission with fixed coupling...

G - Physics – 01 – V

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G01V 1/047 (2006.01) G01V 1/42 (2006.01)

Patent

CA 2470173

The invention concerns a system for seismic emission in an underground formation using at least a seismic source successively mobile in a plurality of prepared activating sites and a method therefor. The system comprises for example a plurality of coupling devices (1) including each for example two anchoring elements (12, 9') closely coupled with the terrain (by cementing for example). Said anchoring elements are integral with the seismic source (V), such as any particular type of vibrator or a pulse source, through transmission elements (10, 13). The seismic source is coupled with the coupling device (1) by fast locking means (18, 19). The coupling devices (1) may be pre-installed in a plurality of prepared sites above the monitored formation. Seismic monitoring operations can be carried out by successively moving at least a seismic source to the different sites of the installed coupling devices (1). The invention is in particular useful for equipping a mining zone of an underground area with periodical seismic monitoring means.

Système d'émission sismique dans une formation souterraine utilisant au moins une source sismique déplaçable successivement en une pluralité d'emplacements d'activation préparés et méthode pour sa mise en oeuvre. Le système comporte par exemple une pluralité de dispositifs de couplage (1) comprenant chacun par exemple deux éléments d'ancrage (12, 9') couplés étroitement avec le terrain (par cimentation par exemple). Ces éléments d'ancrage sont solidarisés avec la source sismique (V), telle qu'un vibrateur d'un type quelconque ou bien encore une source impulsionnelle, par des éléments de transmission (10, 13). La source sismique est couplée avec le dispositif de couplage (1) par des moyens de verrouillage rapide (18,19). Les dispositifs de couplage (1) peuvent être préinstallés en une multitude d'emplacements préparés au-dessus de la formation à surveiller.

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