CA2002806A1 - Rock anchor and method of manufacture - Google Patents

Rock anchor and method of manufacture

Info

Publication number
CA2002806A1
CA2002806A1 CA2002806A CA2002806A CA2002806A1 CA 2002806 A1 CA2002806 A1 CA 2002806A1 CA 2002806 A CA2002806 A CA 2002806A CA 2002806 A CA2002806 A CA 2002806A CA 2002806 A1 CA2002806 A1 CA 2002806A1
Authority
CA
Canada
Prior art keywords
bulbous portion
strands
tendon
rock anchor
manufacture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA2002806A
Other versions
CA2002806F (en
CA2002806C (en
Inventor
Neville A. Hedrick
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Garford Pty Ltd
Original Assignee
Garford Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=3773499&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2002806(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Garford Pty Ltd filed Critical Garford Pty Ltd
Publication of CA2002806F publication Critical patent/CA2002806F/en
Publication of CA2002806A1 publication Critical patent/CA2002806A1/en
Application granted granted Critical
Publication of CA2002806C publication Critical patent/CA2002806C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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).
CA002002806A 1988-11-14 1989-11-10 Rock anchor and method of manufacture Expired - Lifetime CA2002806C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPJ1416 1988-11-14
AUPJ141688 1988-11-14

Publications (3)

Publication Number Publication Date
CA2002806F CA2002806F (en) 1990-05-14
CA2002806A1 true CA2002806A1 (en) 1990-05-14
CA2002806C CA2002806C (en) 1995-08-08

Family

ID=3773499

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002002806A Expired - Lifetime CA2002806C (en) 1988-11-14 1989-11-10 Rock anchor and method of manufacture

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 (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993003256A1 (en) * 1991-07-26 1993-02-18 J.J.P. Geotechnical Engineering Pty. Ltd. A 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 Ground reinforcement method and ground reinforcement device using PC strand
AU2010310869B2 (en) * 2009-10-23 2014-08-28 Garford Pty Ltd Cable bolt
CN111842722B (en) * 2020-08-30 2024-08-27 尤加东 Steel strand pier head

Family Cites Families (13)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
ZA898640B (en) 1990-09-26
EP0442935A4 (en) 1992-06-03
CA2002806F (en) 1990-05-14
DE68924171D1 (en) 1995-10-12
DE68924171T2 (en) 1996-02-22
CA2002806C (en) 1995-08-08
EP0442935B1 (en) 1995-09-06
WO1990005811A1 (en) 1990-05-31
EP0442935A1 (en) 1991-08-28
ATE127550T1 (en) 1995-09-15

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Legal Events

Date Code Title Description
EEER Examination request
NARC Re-examination certificate
MKEX Expiry