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GB2044331B - Mine-roof supports - Google Patents

Mine-roof supports

Info

Publication number
GB2044331B
GB2044331B GB7908418A GB7908418A GB2044331B GB 2044331 B GB2044331 B GB 2044331B GB 7908418 A GB7908418 A GB 7908418A GB 7908418 A GB7908418 A GB 7908418A GB 2044331 B GB2044331 B GB 2044331B
Authority
GB
United Kingdom
Prior art keywords
mine
roof supports
roof
supports
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
GB7908418A
Other versions
GB2044331A (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.)
Joy Global Industries Ltd
Original Assignee
Dobson Park Industries 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 Dobson Park Industries Ltd filed Critical Dobson Park Industries Ltd
Priority to GB7908418A priority Critical patent/GB2044331B/en
Priority to ZA00801330A priority patent/ZA801330B/en
Priority to AU56221/80A priority patent/AU5622180A/en
Priority to MX181453A priority patent/MX150136A/en
Priority to IN271/CAL/80A priority patent/IN152972B/en
Publication of GB2044331A publication Critical patent/GB2044331A/en
Application granted granted Critical
Publication of GB2044331B publication Critical patent/GB2044331B/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
    • E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
    • E21D23/0017—Pile type supports
    • E21D23/0021—Pile type supports comprising two walking elements
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
GB7908418A 1979-03-09 1979-03-09 Mine-roof supports Expired GB2044331B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB7908418A GB2044331B (en) 1979-03-09 1979-03-09 Mine-roof supports
ZA00801330A ZA801330B (en) 1979-03-09 1980-03-06 Mine-roof supports
AU56221/80A AU5622180A (en) 1979-03-09 1980-03-06 Mine roof support
MX181453A MX150136A (en) 1979-03-09 1980-03-06 IMPROVEMENTS IN MINE ROOF SUPPORT
IN271/CAL/80A IN152972B (en) 1979-03-09 1980-03-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7908418A GB2044331B (en) 1979-03-09 1979-03-09 Mine-roof supports

Publications (2)

Publication Number Publication Date
GB2044331A GB2044331A (en) 1980-10-15
GB2044331B true GB2044331B (en) 1984-05-31

Family

ID=10503765

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7908418A Expired GB2044331B (en) 1979-03-09 1979-03-09 Mine-roof supports

Country Status (5)

Country Link
AU (1) AU5622180A (en)
GB (1) GB2044331B (en)
IN (1) IN152972B (en)
MX (1) MX150136A (en)
ZA (1) ZA801330B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114233359B (en) * 2022-01-24 2024-03-01 中煤能源研究院有限责任公司 Roof-caving type gangue filling hydraulic support and filling method

Also Published As

Publication number Publication date
GB2044331A (en) 1980-10-15
MX150136A (en) 1984-03-19
ZA801330B (en) 1981-03-25
IN152972B (en) 1984-05-12
AU5622180A (en) 1980-09-11

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee