Rockbolt

Rockbolt

PCT No. PCT/NO93/00129 Sec. 371 Date May 1, 1995 Sec. 102(e) Date May 1, 1995 PCT Filed Aug. 24, 1993 PCT Pub. No. WO94/05900 PCT Pub. Date Mar. 17, 1994Device for fastening of a rockbolt (12) in a hole (11) in rock, provided with an expansion bushing (14) at the inner end. At the outer end of the r...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: NES, ODDBJOERN
Format: Patent
Sprache:eng
Schlagworte:
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
TUNNELS
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Zusammenfassung:PCT No. PCT/NO93/00129 Sec. 371 Date May 1, 1995 Sec. 102(e) Date May 1, 1995 PCT Filed Aug. 24, 1993 PCT Pub. No. WO94/05900 PCT Pub. Date Mar. 17, 1994Device for fastening of a rockbolt (12) in a hole (11) in rock, provided with an expansion bushing (14) at the inner end. At the outer end of the rockbolt, a washer like pressure member (18) is arranged to press against the rock (19), with a nut (16). The rockbolt (12) is provided with a tube (23) extending over at least the greater part of its free length, and is provided to supply cementing grout to the inner end of the rock hole and expelling of air from the rock hole. The tube is preferably connected to transfer cementing grout through the annular passage created in the tube.