E - Fixed Constructions – 21 – D
Patent
E - Fixed Constructions
21
D
E21D 21/00 (2006.01) E21D 20/00 (2006.01) E21D 20/02 (2006.01)
Patent
CA 2206909
A rock anchoring system of the type including a rod having a threaded end portion engaged into a drilled hole includes settable resin sticks located around the threaded portion of the shaft at the closed end of the hole and is improved by the provision of a collar member which acts as a dam to prevent migration of the resin during the setting process. The collar member comprises a sleeve portion closely surrounding a smooth portion of the shaft and engaged thereon by a friction fit. A rib portion centrally of and surrounding the sleeve portion has a diameter slightly greater than that of the hole so that it acts as a dam.
Dispositif d'ancrage dans la roche du type boulon à extrémité filetée, inséré dans un trou préforé avec des bâtons de résine durcissable placés autour de la partie filetée au fond du trou, et amélioré par l'ajout d'un collier agissant comme dispositif de retenue pour empêcher la résine de migrer durant la réaction de durcissement. Le collier comprend une partie en manchon placée sur la partie lisse du boulon avec un ajustement serré. Une nervure médiane façonnée à la périphérie du manchon et dont le diamètre est légèrement supérieur à celui du trou agit comme barrière au passage de la résine.
Grindle Colin
Ade & Company
Grindle Colin
LandOfFree
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