CA919439A - Mine roof supports - Google Patents

Mine roof supports

Info

Publication number
CA919439A
CA919439A CA073296A CA73296A CA919439A CA 919439 A CA919439 A CA 919439A CA 073296 A CA073296 A CA 073296A CA 73296 A CA73296 A CA 73296A CA 919439 A CA919439 A CA 919439A
Authority
CA
Canada
Prior art keywords
mine roof
roof supports
supports
mine
roof
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.)
Expired
Application number
CA073296A
Other languages
English (en)
Inventor
W. Seddon Jeffrey
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.)
Gullick Dobson Ltd
Original Assignee
Gullick Dobson 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 Gullick Dobson Ltd filed Critical Gullick Dobson Ltd
Application granted granted Critical
Publication of CA919439A publication Critical patent/CA919439A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/0409—Aligning or guiding means for the supports or for the constitutive parts of the supports

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Architecture (AREA)
  • Geology (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Revetment (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Ladders (AREA)
  • Movable Scaffolding (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
CA073296A 1969-02-13 1970-01-28 Mine roof supports Expired CA919439A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB799869A GB1254594A (en) 1969-02-13 1969-02-13 Improvements in or relating to mine roof supports

Publications (1)

Publication Number Publication Date
CA919439A true CA919439A (en) 1973-01-23

Family

ID=9843830

Family Applications (1)

Application Number Title Priority Date Filing Date
CA073296A Expired CA919439A (en) 1969-02-13 1970-01-28 Mine roof supports

Country Status (5)

Country Link
JP (1) JPS4934882B1 (enrdf_load_stackoverflow)
CA (1) CA919439A (enrdf_load_stackoverflow)
DE (1) DE2004180C3 (enrdf_load_stackoverflow)
FR (1) FR2035210A5 (enrdf_load_stackoverflow)
GB (1) GB1254594A (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5518394U (enrdf_load_stackoverflow) * 1978-07-26 1980-02-05
RU2136888C1 (ru) * 1998-02-10 1999-09-10 АО "Подмосковный научно-исследовательский и проектно-конструкторский угольный институт" Механизированная крепь для отработки пластов камерами
CN114909168B (zh) * 2021-02-10 2025-02-25 山东兖煤黑豹矿业装备有限公司 支护装置及掘进系统

Also Published As

Publication number Publication date
JPS4934882B1 (enrdf_load_stackoverflow) 1974-09-18
DE2004180C3 (de) 1975-10-23
FR2035210A5 (enrdf_load_stackoverflow) 1970-12-18
DE2004180B2 (de) 1974-05-16
DE2004180A1 (de) 1970-09-03
GB1254594A (en) 1971-11-24

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