E - Fixed Constructions – 21 – D
Patent
E - Fixed Constructions
21
D
E21D 21/00 (2006.01) E02D 5/74 (2006.01) E21B 7/00 (2006.01) E21B 7/20 (2006.01)
Patent
CA 2609737
The invention relates to a method and device for drilling, particularly percussion drilling or rotary percussion drilling a hole in soil or rock material and fixing an anchoring in the hole. To this end, a drilled hole is made by a drill bit (3) mounted on a drill rod (2). According to the invention, the drill rod (2), on the rear side facing away from the drilling surface (5) of the drill bit (3), is surrounded at a distance from the drill bit (3) by an anchoring element (4) whose outside dimension exceeds, at least in part, the circumference of the drilled hole made by the drill bit (3) whereby enabling a constructively easier and more reliable securing of the anchoring inside the drilled hole.
L'invention concerne un procédé et un dispositif pour le forage, notamment pour le forage par percussion ou par roto-percussion, d'un trou dans le sol ou la roche, ainsi que pour la fixation d'un ancrage dans le trou, un trou de forage étant formé par une couronne de forage (3) montée sur un train de tiges de forage (2). Selon l'invention, le train de tiges de forage (2) est entouré, au niveau de la face arrière opposée à la surface de taille (5) de la couronne de forage (3), notamment à distance de la couronne de forage (3), d'un élément d'ancrage (4) dont la dimension extérieure dépasse au moins partiellement la circonférence du trou de forage produit par la couronne de forage (3). Cela permet d'assurer, de manière simple et fiable, un blocage de l'ancrage dans un trou de forage.
Boehm Karl
Mocivnik Josef
Wagner Alfred
"alwag" Tunnelausbau Gesellschaft M.b.h.
Fetherstonhaugh & Co.
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