Plug member

E - Fixed Constructions – 21 – D

Patent

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Details

E21D 20/02 (2006.01) E21B 33/12 (2006.01)

Patent

CA 2544494

A plug member (10) for retaining grout in a cable bolt hole or a rockbolt hole or inside a rockbolt in underground excavations, comprising a cylindrical cap portion (20) with a means to wedge (26) the cap portion in the hole. The means to wedging means (26) may comprise a plurality of inclined flaps, a continuous resilient skirt, or a tapered bung.The cap portion (20) is provided with at least one port (50) to receive a grout delivery hose. The or each port (50) is comprised of a plurality of flexible flaps (56) moveable between an open position and a closed position. In the closed position the flaps (56) inter- engage to substantially close the port (50) and prevent grout leakage from the hole.

L'invention concerne un bouchon d'obturation (10) permettant de retenir du coulis dans un trou de boulon de câble ou de boulon d'ancrage ou à l'intérieur d'un boulon d'ancrage dans des excavations souterraines, qui comprend une partie tête cylindrique (20) pourvue de moyens permettant de caler (26) celle-ci dans le trou. Les éléments de calage (26) peuvent comprendre une pluralité de languettes inclinées, une jupe élastique continue, ou une bonde tronconique. La partie tête (20) est dotée d'au moins un orifice (50) conçu pour recevoir un tuyau de distribution de coulis. Le ou les orifices (50) sont constitués d'une pluralité de languettes souples (56) pouvant passer d'une position ouverte à une position fermée. Dans la position fermée, les languettes (56) entrent en contact les unes avec les autres pour fermer sensiblement l'orifice (50) et empêcher la fuite de coulis depuis l'orifice.

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