ZA898640B - Rock anchor and method of manufacturing - Google Patents
Rock anchor and method of manufacturingInfo
- Publication number
- ZA898640B ZA898640B ZA898640A ZA898640A ZA898640B ZA 898640 B ZA898640 B ZA 898640B ZA 898640 A ZA898640 A ZA 898640A ZA 898640 A ZA898640 A ZA 898640A ZA 898640 B ZA898640 B ZA 898640B
- Authority
- ZA
- South Africa
- Prior art keywords
- bulbous portion
- strands
- tendon
- rock anchor
- manufacturing
- Prior art date
Links
- 239000011435 rock Substances 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title 1
- 210000002435 tendon Anatomy 0.000 abstract 3
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B5/00—Making ropes or cables from special materials or of particular form
- D07B5/005—Making ropes or cables from special materials or of particular form characterised by their outer shape or surface properties
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
- D07B7/16—Auxiliary apparatus
- D07B7/18—Auxiliary apparatus for spreading or untwisting ropes or cables into constituent parts for treatment or splicing purposes
- D07B7/187—Auxiliary apparatus for spreading or untwisting ropes or cables into constituent parts for treatment or splicing purposes for forming bulbs in ropes or cables
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/006—Anchoring-bolts made of cables or wires
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Piles And Underground Anchors (AREA)
- Dowels (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
A rock anchor (10) characterised by a tendon (12) composed of a plurality of strands (14, 15), the tendon (12) having at least one bulbous portion (16), wherein all the strands (14, 15) in the or each bulbous portion (16) are spaced apart from one another substantially around the periphery (17) of each bulbous portion (16). The tendon (12) is comprised of a plurality of outer strands (14) helically wound around a centre strand (15). In each bulbous portion (16) the outer strands (14) and the centre strand (15) are disposed adjacent the bulb periphery (17).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPJ141688 | 1988-11-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA898640B true ZA898640B (en) | 1990-09-26 |
Family
ID=3773499
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA898640A ZA898640B (en) | 1988-11-14 | 1989-11-13 | Rock anchor and method of manufacturing |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0442935B1 (en) |
AT (1) | ATE127550T1 (en) |
CA (1) | CA2002806C (en) |
DE (1) | DE68924171T2 (en) |
WO (1) | WO1990005811A1 (en) |
ZA (1) | ZA898640B (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5570976A (en) * | 1991-07-26 | 1996-11-05 | J.J.P. Geotechnical Engineering Pty. Ltd. | Cable bolt |
DE4203740C2 (en) * | 1992-02-09 | 1996-07-11 | Dyckerhoff & Widmann Ag | Method for producing an anchor element from a strand made of twisted steel wires |
FR2726585A1 (en) * | 1994-11-09 | 1996-05-10 | Fortin Jean | Shrouding for a cable |
AU2005200714B2 (en) | 2005-02-17 | 2011-10-27 | Fci Holdings Delaware, Inc. | Cable bulbing apparatus and method for forming bulbs in a cable bolt |
KR101043127B1 (en) * | 2008-02-22 | 2011-06-20 | (주) 케이씨지 | Device and method for reinforcing the ground using pc twisted steel wire |
WO2011047416A1 (en) * | 2009-10-23 | 2011-04-28 | Garford Pty Ltd | Cable bolt |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1024696A (en) * | 1962-10-26 | 1966-03-30 | Cementation Co Ltd | Improvements relating to subterranean anchorages |
GB975642A (en) * | 1962-11-12 | 1964-11-18 | Cementation Co Ltd | Improvements relating to subterranean anchorages |
US3727298A (en) * | 1971-06-10 | 1973-04-17 | North American Rockwell | Friction welding method |
FR2378123A1 (en) * | 1977-01-24 | 1978-08-18 | Bouvet Ets H | Mfr. of metal handle from rods - by twisting, compressing and untwisting the rods |
FR2385485A1 (en) * | 1977-03-30 | 1978-10-27 | Petroles Cie Francaise | PIPE JOINING MACHINE FOR LAYING IN WATER OF ALL DEPTHS |
CA1059351A (en) * | 1977-11-01 | 1979-07-31 | Paul J. Villgren | Cable bolt |
CH632948A5 (en) * | 1978-11-10 | 1982-11-15 | Schlatter Ag | DEVICE FOR WELDING TWO PROFILE RODS TOGETHER. |
AU7976382A (en) * | 1981-01-27 | 1982-08-05 | Barry Garfield Frederick | Pipe joining apparatus |
US4492015A (en) * | 1982-06-24 | 1985-01-08 | Dearman Timothy Charles | Apparatus for use in welding |
US4722468A (en) * | 1982-07-20 | 1988-02-02 | Mcclure Gary W | Boiler pipe tool for heliarc welding with tongue and groove interlock |
GB8321550D0 (en) * | 1983-08-10 | 1983-09-14 | Dividag Systems Ltd | Anchor |
FR2571996B1 (en) * | 1984-10-22 | 1986-12-26 | Alsthom Atlantique | EXTERNAL DEVICE FOR JOINING TWO TUBULAR ELEMENTS FOR THEIR WELDING ASSEMBLY |
US4750662A (en) * | 1987-02-10 | 1988-06-14 | Larry And Associates | Pipe welding alignment tool |
-
1989
- 1989-11-10 CA CA002002806A patent/CA2002806C/en not_active Expired - Lifetime
- 1989-11-13 ZA ZA898640A patent/ZA898640B/en unknown
- 1989-11-14 WO PCT/AU1989/000486 patent/WO1990005811A1/en active IP Right Grant
- 1989-11-14 DE DE68924171T patent/DE68924171T2/en not_active Expired - Fee Related
- 1989-11-14 EP EP89912755A patent/EP0442935B1/en not_active Expired - Lifetime
- 1989-11-14 AT AT89912755T patent/ATE127550T1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ATE127550T1 (en) | 1995-09-15 |
EP0442935A1 (en) | 1991-08-28 |
DE68924171T2 (en) | 1996-02-22 |
CA2002806A1 (en) | 1990-05-14 |
EP0442935A4 (en) | 1992-06-03 |
CA2002806F (en) | 1990-05-14 |
WO1990005811A1 (en) | 1990-05-31 |
EP0442935B1 (en) | 1995-09-06 |
CA2002806C (en) | 1995-08-08 |
DE68924171D1 (en) | 1995-10-12 |
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