Jacket tube for a drilling and anchoring device

Details Jacket tube for a drilling and anchoring device Jacket tube for a drilling and anchoring device

E - Fixed Constructions

21

D

E21D 21/00 (2006.01)

Patent

CA 2346212

The invention relates to a jacket tube (6) for a device for drilling holes and forming an anchorage in the earth or rock. The inventive jacket tube (6) is coupled with a drill pipe (3) and/or a drill bit (1) or a drill hammer and is configured with a plurality of through openings across its periphery. Once the borehole (2) has been made, or after an anchor has been introduced, the jacket tube can be filled with a hardenable suspension. According to the invention, the jacket tube consists of at least one expanded metal element (6) which has evenly distributed through openings (9) and connecting elements (7, 8), especially sleeves, at the ends for connecting to a drill bit (1) and/or other jacket tube elements (6). The borehole (2) is therefore easy to produce and the jacket tube (6) can be anchored securely.

L'invention concerne une gaine tubulaire (6) destinée à un dispositif permettant de forer des trous et de former un ancrage dans le sol ou le rocher. La gaine (6), couplée avec une tige de forage (3) et/ou une couronne (1) ou un marteau de forage, présente à sa périphérie une pluralité de trous traversants. Une fois le trou de forage (2) terminé ou l'ancre mise en place, la gaine peut être remplie par une suspension durcissable. La gaine est formée d'au moins un élément (6) en métal déployé, qui présente des trous traversants régulièrement répartis et comporte à ses extrémités des éléments raccords (7, 8), notamment des manchons d'accouplement, permettant de le réunir à la couronne de forage (1) et/ou à d'autres éléments de la gaine (6). Le dispositif permet de creuser facilement un trou de forage (2) et d'ancrer la gaine (6) d'une manière sûre.

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