SE380581B - Anordning for mojliggorande av omedelbar infestning av en kringgjuten bult i ett borrhal - Google Patents

Anordning for mojliggorande av omedelbar infestning av en kringgjuten bult i ett borrhal

Info

Publication number
SE380581B
SE380581B SE7409831A SE7409831A SE380581B SE 380581 B SE380581 B SE 380581B SE 7409831 A SE7409831 A SE 7409831A SE 7409831 A SE7409831 A SE 7409831A SE 380581 B SE380581 B SE 380581B
Authority
SE
Sweden
Prior art keywords
possibility
circular bolt
immediate fixing
hall
drill
Prior art date
Application number
SE7409831A
Other languages
English (en)
Swedish (sv)
Inventor
A I Lundkvist
Original Assignee
A I Lundkvist
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 A I Lundkvist filed Critical A I Lundkvist
Priority to SE7409831A priority Critical patent/SE380581B/xx
Priority to FI752161A priority patent/FI752161A7/fi
Priority to NO752687A priority patent/NO752687L/no
Publication of SE380581B publication Critical patent/SE380581B/xx

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/14—Drilling by use of heat, e.g. flame drilling
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Dowels (AREA)
SE7409831A 1974-07-30 1974-07-30 Anordning for mojliggorande av omedelbar infestning av en kringgjuten bult i ett borrhal SE380581B (sv)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE7409831A SE380581B (sv) 1974-07-30 1974-07-30 Anordning for mojliggorande av omedelbar infestning av en kringgjuten bult i ett borrhal
FI752161A FI752161A7 (Direct) 1974-07-30 1975-07-28
NO752687A NO752687L (Direct) 1974-07-30 1975-07-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7409831A SE380581B (sv) 1974-07-30 1974-07-30 Anordning for mojliggorande av omedelbar infestning av en kringgjuten bult i ett borrhal

Publications (1)

Publication Number Publication Date
SE380581B true SE380581B (sv) 1975-11-10

Family

ID=20321802

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7409831A SE380581B (sv) 1974-07-30 1974-07-30 Anordning for mojliggorande av omedelbar infestning av en kringgjuten bult i ett borrhal

Country Status (3)

Country Link
FI (1) FI752161A7 (Direct)
NO (1) NO752687L (Direct)
SE (1) SE380581B (Direct)

Also Published As

Publication number Publication date
FI752161A7 (Direct) 1976-01-31
NO752687L (Direct) 1976-02-02

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