E - Fixed Constructions – 21 – D
Patent
E - Fixed Constructions
21
D
E21D 21/00 (2006.01) E02D 5/76 (2006.01) E02D 5/80 (2006.01) E21B 7/00 (2006.01)
Patent
CA 2607920
The invention relates to a method and device for drilling, particularly percussion or rotary percussion drilling, a hole in soil or rock material and for producing an anchoring. According to the invention, a drill bit (2) fastened to drilling rods (3) makes a drilled hole (1). A number of, in particular, wedge-shaped spreading elements (7) oriented contrary to the direction of drilling (6) are provided in a part joined to the drill bit (2). These spreading elements can be introduced into the wall of the drilled hole (1) after the drilled hole (1) is completed whereby making it possible to obtain a secure anchoring immediately after the drilled hole (1) has been completed.
La présente invention concerne un procédé et un dispositif pour sonder, en particulier par percussion ou par rotopercussion, un trou dans le sol ou dans la roche, et pour réaliser un ancrage, une couronne de sondage (2) montée sur des tiges de sondage (3), formant un trou de sondage (1). Selon l'invention, dans une partie qui se raccorde à la couronne de sondage (2), se trouve une pluralité d'éléments d'écartement (7) en particulier cunéiformes, orientés à l'opposé de la direction de sondage (6), qui peuvent, après finalisation du trou de sondage (1), être placés dans la paroi du trou de sondage (1), ce qui permet d'obtenir un ancrage fiable directement après finalisation du trou de sondage (1).
Boehm Karl
Karpellus Walter
Wagner Alfred
"alwag" Tunnelausbau Gesellschaft M.b.h.
Fetherstonhaugh & Co.
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