GB2006905A - Roof Bolt - Google Patents

Roof Bolt

Info

Publication number
GB2006905A
GB2006905A GB7838160A GB7838160A GB2006905A GB 2006905 A GB2006905 A GB 2006905A GB 7838160 A GB7838160 A GB 7838160A GB 7838160 A GB7838160 A GB 7838160A GB 2006905 A GB2006905 A GB 2006905A
Authority
GB
United Kingdom
Prior art keywords
slot
hole
tape
binding
wire
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.)
Withdrawn
Application number
GB7838160A
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.)
Atlas Copco AB
Original Assignee
Atlas Copco AB
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 Atlas Copco AB filed Critical Atlas Copco AB
Publication of GB2006905A publication Critical patent/GB2006905A/en
Withdrawn legal-status Critical Current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
    • E21D21/004—Bolts held in the borehole by friction all along their length, without additional fixing means

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)
  • Dowels (AREA)
  • Piles And Underground Anchors (AREA)
  • Ropes Or Cables (AREA)

Abstract

A friction roof bolt comprising a generally annular body which from end-to-end has a slot through its thickness. Means is provided for fixing the body in a radially elastically compressed state so as to make possible insertion thereof in a hole 12 of diameter substantially smaller than the normal outer diameter of the body. After such insertion, the body is caused to expand to anchor by frictional engagement with the surrounding wall of the hole 12. The annular body may be held in its compressed state by binding it with wire or glass fibre tape, or bonding or welding a tape along the slot to hold it closed. after insertion in the hole 12, a cutting tool is drawn along the slot by a wire 14 to release the binding or tape. <IMAGE>
GB7838160A 1977-10-03 1978-09-26 Roof Bolt Withdrawn GB2006905A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7711060A SE7711060L (en) 1977-10-03 1977-10-03 WAY TO INFORM A BOLT IN A DRILL HALL

Publications (1)

Publication Number Publication Date
GB2006905A true GB2006905A (en) 1979-05-10

Family

ID=20332447

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7838160A Withdrawn GB2006905A (en) 1977-10-03 1978-09-26 Roof Bolt

Country Status (6)

Country Link
AU (1) AU4019878A (en)
DE (1) DE2842722A1 (en)
FR (1) FR2412688A1 (en)
GB (1) GB2006905A (en)
SE (1) SE7711060L (en)
ZA (1) ZA785306B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009150617A1 (en) * 2008-06-12 2009-12-17 Bent It Over Marketing Cc Anchoring device

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4350462A (en) * 1980-03-28 1982-09-21 Elders G W Roof support pin
US4313696A (en) * 1980-04-07 1982-02-02 Ingersoll-Rand Company Friction rock stabilizer and method for insertion thereof in an earth structure bore
US4400113A (en) * 1980-06-13 1983-08-23 Ingersol-Rand Company Friction rock stabilizer and a method of isolating the same from a bore surface
SE8106165L (en) * 1981-10-19 1983-04-20 Atlas Copco Ab PROCEDURE FOR MOUNTAIN AND MOUNTAIN
FI66055C (en) * 1982-06-04 1984-08-10 Tampella Oy Ab OVER APPARATUS FOER MONTERING AV LOEDBULTAR VID BERGBULTNING
US5192146A (en) * 1991-08-30 1993-03-09 Simmons-Rand Company Open seam friction rock stabilizer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009150617A1 (en) * 2008-06-12 2009-12-17 Bent It Over Marketing Cc Anchoring device

Also Published As

Publication number Publication date
DE2842722A1 (en) 1979-04-12
AU4019878A (en) 1980-04-03
FR2412688A1 (en) 1979-07-20
SE7711060L (en) 1979-04-05
ZA785306B (en) 1979-08-29

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)