GB8706925D0 - Rock bolt - Google Patents

Rock bolt

Info

Publication number
GB8706925D0
GB8706925D0 GB878706925A GB8706925A GB8706925D0 GB 8706925 D0 GB8706925 D0 GB 8706925D0 GB 878706925 A GB878706925 A GB 878706925A GB 8706925 A GB8706925 A GB 8706925A GB 8706925 D0 GB8706925 D0 GB 8706925D0
Authority
GB
United Kingdom
Prior art keywords
rock bolt
rock
bolt
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.)
Pending
Application number
GB878706925A
Other versions
GB2202600A (en
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.)
Boart UK Ltd
Original Assignee
Boart UK 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
Application filed by Boart UK Ltd filed Critical Boart UK Ltd
Priority to GB08706925A priority Critical patent/GB2202600A/en
Publication of GB8706925D0 publication Critical patent/GB8706925D0/en
Publication of GB2202600A publication Critical patent/GB2202600A/en
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D21/02—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection having means for indicating tension
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube

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)
GB08706925A 1987-03-24 1987-03-24 Yielding rock bolt Pending GB2202600A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08706925A GB2202600A (en) 1987-03-24 1987-03-24 Yielding rock bolt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08706925A GB2202600A (en) 1987-03-24 1987-03-24 Yielding rock bolt

Publications (2)

Publication Number Publication Date
GB8706925D0 true GB8706925D0 (en) 1987-04-29
GB2202600A GB2202600A (en) 1988-09-28

Family

ID=10614494

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08706925A Pending GB2202600A (en) 1987-03-24 1987-03-24 Yielding rock bolt

Country Status (1)

Country Link
GB (1) GB2202600A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8812655U1 (en) * 1988-10-08 1989-03-30 Dyckerhoff & Widmann Ag, 8000 Muenchen, De
GB2302578B (en) * 1995-06-23 1999-02-17 R G Manufacturing Ltd Nudge bar and energy absorbing device
US5791823A (en) * 1996-12-06 1998-08-11 Inco Limited Yielding head for mine support
AU2002331421B2 (en) * 2001-09-06 2008-05-22 Garock Pty Ltd. A yielding rock bolt
US6984091B2 (en) * 2001-09-06 2006-01-10 Garford Pty Ltd. Yielding rock bolt
CN102536278B (en) * 2012-01-15 2015-01-28 山东科技大学 Progressive yielding combined-type extensible anchor rod and construction method thereof

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB776249A (en) * 1953-02-11 1957-06-05 Bayliss Jones And Bayliss Ltd Improvements in or relating to means for obtaining an anchorage
BE572014A (en) * 1958-10-14 1958-10-31
NL134701C (en) * 1965-11-12
GB1351735A (en) * 1970-04-13 1974-05-01 Yarrow Co Ltd Shock attenuators
DE2146648A1 (en) * 1970-09-18 1972-05-25 Omark Industries Inc Device for connecting two objects
GB1377221A (en) * 1971-01-16 1974-12-11 Dunlop Ltd Shock absorbing devices
US3721320A (en) * 1972-08-26 1973-03-20 J Hirsch Energy absorption apparatus
US3967455A (en) * 1975-02-03 1976-07-06 The United States Of America As Represented By The Secretary Of The Interior Controlled yielding rock bolt
FR2304770A1 (en) * 1975-03-18 1976-10-15 Bergwerksverband Gmbh ROCK ANCHOR
DE2825460A1 (en) * 1977-06-16 1979-01-04 Volvo Ab ENERGY ABSORBERS, IN PARTICULAR FOR MOTOR VEHICLES
EP0078479B1 (en) * 1981-11-02 1986-06-18 Engineering Patents & Equipment Limited Energy absorbing seat arrangement

Also Published As

Publication number Publication date
GB2202600A (en) 1988-09-28

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