E - Fixed Constructions – 21 – D
Patent
E - Fixed Constructions
21
D
E21D 20/00 (2006.01) E21D 21/00 (2006.01)
Patent
CA 2442320
In a method for drilling, in particular impact drilling or rotary percussion drilling, a hole (7) in soil or rock material and fixing an anchorage in said hole, wherein a drill hole (7) is formed by means of a drill bit (1) mounted on a drill rod assembly (5) while simultaneously introducing a jacket tube (4) surrounding the rod assembly (5) in a spaced-apart manner, it is provided that the jacket tube, which is formed with a longitudinal slot (8), is at least partially introduced in substantial abutment on the drill hole (7) during drilling, whereby a reliable anchorage can be obtained via the longitudinally slotted jacket tube (4) at a simple structure.
L'invention concerne un procédé et un dispositif de forage, en particulier de forage à percussion ou de forage par percussion-rotation d'un trou (7) dans le matériau du sol, y compris d'un sol rocheux, ainsi que de fixation d'un ancrage dans ledit trou. Le procédé consiste à former un trou de forage (7) au moyen d'un trépan (1) monté sur un tube de forage (5) et à introduire en même temps un tube de gainage (4) entourant à distance le tube de forage. L'invention est caractérisée en ce qu'un tube de gainage (4) muni d'une fente longitudinale (8) est introduit au moins partiellement et s'applique sensiblement contre le trou de forage (7) durant le forage. L'invention permet ainsi d'obtenir, pour une construction simple, un ancrage fiable, par l'intermédiaire d'un tube de gainage fendu longitudinalement (4).
"alwag" Tunnelausbau Gesellschaft M.b.h.
Fetherstonhaugh & Co.
Techmo Entwicklungs- Und Vertriebs Gmbh
LandOfFree
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