Rock bolt

Rock bolt

PCT No. PCT/AU94/00455 Sec. 371 Date Apr. 8, 1996 Sec. 102(e) Date Apr. 8, 1996 PCT Filed Aug. 9, 1994 PCT Pub. No. WO95/05525 PCT Pub. Date Feb. 23, 1995A rock bolt (1) adapted to be anchored in a hole in a rock formation by means of a cement or a chemical resin anchor is disanchored. The rock bolt...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MIECZYSLAW W. FABJANCZYK, MAXWELL T. RENWICK, WINTON J. GALE
Format: Patent
Sprache:eng
Schlagworte:
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
TUNNELS
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Beschreibung
Zusammenfassung:PCT No. PCT/AU94/00455 Sec. 371 Date Apr. 8, 1996 Sec. 102(e) Date Apr. 8, 1996 PCT Filed Aug. 9, 1994 PCT Pub. No. WO95/05525 PCT Pub. Date Feb. 23, 1995A rock bolt (1) adapted to be anchored in a hole in a rock formation by means of a cement or a chemical resin anchor is disanchored. The rock bolt (1) comprises a core (5) on which is formed a profile for optimising the load transfer and the stiffiess properties of the rock bolt (1), the profile comprising opposed sides (6), with one or both sides (6) comprising at least two sections (9, 11), with a first section (9) being steeper than a second section (11).