Process for setting anchors and anchor usable in the process

Details Process for setting anchors and anchor usable in the process Process for setting anchors and anchor usable in the process

E - Fixed Constructions

02

D

E02D 5/76 (2006.01)

Patent

CA 2552700

The invention relates to an anchor comprising a pipe (1) which is folded in the longitudinal direction and an end piece (13) which can be opened under pressure and which is provided on the end of the anchor which is arranged inside the borehole. Said anchor is introduced into the borehole and is enlarged by using internal pressure which unfolds the pipe (1) until said pipe (1) is arranged on the friction fit and/or form fit on the borehole. Then, the pressure in the anchor is increased such that the front end (15) of the end piece (13) is separated and the hardened material is injected through the anchor into the borehole in order to fill the cavities in the region of the end of the anchor which is arranged in the base of the borehole and in the base (ground, rock) wherein the anchor is fixed, and cavities or crevices are located in the adjacent base. A hydraulically binding material based on cement can be used, in particular, as a hardened material.

L'invention concerne un boulon d'ancrage présentant un tube (1), plié longitudinalement, et une partie d'extrémité (13) pouvant être ouverte sous pression, prévue à l'extrémité du boulon d'ancrage située à l'intérieur du trou de mine. Ce boulon d'ancrage est introduit dans un trou de mine et élargi par application d'une pression interne qui déplie le tube (1) jusqu'à ce que ce dernier (1) soit appliqué sur le trou de mine par friction et/ou liaison de forme. Ensuite, la pression dans le boulon d'ancrage est augmentée de sorte que la pointe avant (15) de la partie d'extrémité (13) est séparée, puis une matière durcissable est injectée dans le trou de mine à travers le boulon ancrage pour colmater des cavités dans la région de l'extrémité du boulon d'ancrage se trouvant au point le plus profond du trou de mine et dans le substrat (sol, roche), dans lequel est fixé le moment d'ancrage, ainsi que des cavités ou des fissures se trouvant dans le substrat adjacent. Une matière à prise hydraulique à base de ciment peut en particulier être utilisée comme matière durcissable.

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