SE0302999D0 - Self-drilling rock bolt - Google Patents

Self-drilling rock bolt

Info

Publication number
SE0302999D0
SE0302999D0 SE0302999A SE0302999A SE0302999D0 SE 0302999 D0 SE0302999 D0 SE 0302999D0 SE 0302999 A SE0302999 A SE 0302999A SE 0302999 A SE0302999 A SE 0302999A SE 0302999 D0 SE0302999 D0 SE 0302999D0
Authority
SE
Sweden
Prior art keywords
rock bolt
contact region
expandable part
drill bit
axial
Prior art date
Application number
SE0302999A
Other languages
Swedish (sv)
Other versions
SE0302999L (en
SE526970C2 (en
Inventor
Fredrik Oeberg
Morgan Kanflod
Original Assignee
Atlas Copco Rock Drills 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 Rock Drills Ab filed Critical Atlas Copco Rock Drills Ab
Priority to SE0302999A priority Critical patent/SE526970C2/en
Publication of SE0302999D0 publication Critical patent/SE0302999D0/en
Priority to PCT/SE2004/001536 priority patent/WO2005047652A1/en
Publication of SE0302999L publication Critical patent/SE0302999L/en
Publication of SE526970C2 publication Critical patent/SE526970C2/en

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
    • E21D21/0046—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts formed by a plurality of elements arranged longitudinally
    • 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
    • E21D21/0053—Anchoring-bolts in the form of lost drilling rods
    • 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
    • E21D21/0073—Anchoring-bolts having an inflatable sleeve, e.g. hollow sleeve expanded by a fluid

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)
  • Earth Drilling (AREA)

Abstract

The invention relates to a self-drilling rock bolt comprising an intermediate expandable part (8) joined at its first end to a connector part (4) and at its second end to a drill bit unit (27), where said connector part (4) abuts against the first axial end surface (7) of said expandable part (8) thereby forming a first contact region (5), and where said drill bit unit (27) abuts against the second axial end surface (9) of said expandable part (8) thereby forming a second contact region (15), and where said expandable part (8), said first contact region (5), and said second contact region (15) all have cross-sections that at least partly overlap each other when seen axially along said rock bolt (2), thereby allowing axial forces during a hammer drilling operation to propagate in an essentially axial direction from said connector part (4) via said expandable part (8) into said drill bit unit (27) thus improving the axial stability of the rock bolt (2).
SE0302999A 2003-11-13 2003-11-13 Self-drilling mounting bolt SE526970C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE0302999A SE526970C2 (en) 2003-11-13 2003-11-13 Self-drilling mounting bolt
PCT/SE2004/001536 WO2005047652A1 (en) 2003-11-13 2004-10-22 Self-drilling rock bolt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0302999A SE526970C2 (en) 2003-11-13 2003-11-13 Self-drilling mounting bolt

Publications (3)

Publication Number Publication Date
SE0302999D0 true SE0302999D0 (en) 2003-11-13
SE0302999L SE0302999L (en) 2005-05-14
SE526970C2 SE526970C2 (en) 2005-11-29

Family

ID=29707909

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0302999A SE526970C2 (en) 2003-11-13 2003-11-13 Self-drilling mounting bolt

Country Status (2)

Country Link
SE (1) SE526970C2 (en)
WO (1) WO2005047652A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE526132C2 (en) * 2003-11-13 2005-07-12 Atlas Copco Rock Drills Ab Method and apparatus for installing a self-drilling expandable rock bolt and a self-drilling expandable rock bolt
AT501979B1 (en) * 2005-05-27 2009-05-15 Karpellus Walter Dipl Ing METHOD AND DEVICE FOR DRILLING, IN PARTICULAR FITTING OR TORQUE DRILLING, A HOLE IN FLOOR OR ROCK MATERIAL
AU2009270337A1 (en) * 2008-07-18 2010-01-21 Nupress Tools Pty Limited Stabilising rock masses
CN102031984B (en) * 2010-11-03 2014-09-03 河南理工大学 Reinforcing device for soft protruding coal bed excavated preserved coal body
SE535912C2 (en) * 2011-06-30 2013-02-12 Leif Eriksson Expandable rock bolt and a method of manufacturing a rock bolt
WO2019033133A1 (en) * 2017-08-09 2019-02-14 Theodore Daniel Swemmer Self drilling expansion friction bolt
EP3530878B1 (en) * 2018-02-22 2023-06-07 Sandvik Mining and Construction Oy Impact absorber for rock bolt
WO2020222030A1 (en) * 2019-04-30 2020-11-05 Franco Di Matteo Self-drilling expandable rock bolt arrangement and related method of manufacture

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU208357B (en) * 1989-08-10 1993-09-28 Bakonyi Bauxitbanya Kft Device for making anchor particularly rock anchor and liquid afterhardening matter for injecting into rock or/and soil mass
AUPQ009799A0 (en) * 1999-04-30 1999-05-27 Raers Corporation Pty Ltd Drilling apparatus and method for single pass bolting
AT412739B (en) * 2002-01-22 2005-06-27 Techmo Entw & Vertriebs Gmbh METHOD AND DEVICE FOR DRILLING A HOLE IN GROUND OR ROCK MATERIAL AND FOR FORMING AN ANCHORAGE

Also Published As

Publication number Publication date
SE0302999L (en) 2005-05-14
WO2005047652A1 (en) 2005-05-26
SE526970C2 (en) 2005-11-29

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Legal Events

Date Code Title Description
NUG Patent has lapsed