GB8419655D0 - Roof support for mines - Google Patents

Roof support for mines

Info

Publication number
GB8419655D0
GB8419655D0 GB848419655A GB8419655A GB8419655D0 GB 8419655 D0 GB8419655 D0 GB 8419655D0 GB 848419655 A GB848419655 A GB 848419655A GB 8419655 A GB8419655 A GB 8419655A GB 8419655 D0 GB8419655 D0 GB 8419655D0
Authority
GB
United Kingdom
Prior art keywords
mines
roof support
roof
support
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.)
Granted
Application number
GB848419655A
Other versions
GB2162570A (en
GB2162570B (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.)
Dowty Mining Equipment Ltd
Original Assignee
Dowty Mining Equipment 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 Dowty Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Priority to GB08419655A priority Critical patent/GB2162570B/en
Publication of GB8419655D0 publication Critical patent/GB8419655D0/en
Publication of GB2162570A publication Critical patent/GB2162570A/en
Application granted granted Critical
Publication of GB2162570B publication Critical patent/GB2162570B/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
    • E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement
    • E21D23/066—Pivoted cantilever extensions therefor
    • 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
    • E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement
    • E21D23/063—Retractable cantilever extensions therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
GB08419655A 1984-08-01 1984-08-01 Mine roof support with extendable and raisable forepole Expired GB2162570B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08419655A GB2162570B (en) 1984-08-01 1984-08-01 Mine roof support with extendable and raisable forepole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08419655A GB2162570B (en) 1984-08-01 1984-08-01 Mine roof support with extendable and raisable forepole

Publications (3)

Publication Number Publication Date
GB8419655D0 true GB8419655D0 (en) 1984-09-05
GB2162570A GB2162570A (en) 1986-02-05
GB2162570B GB2162570B (en) 1987-06-10

Family

ID=10564799

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08419655A Expired GB2162570B (en) 1984-08-01 1984-08-01 Mine roof support with extendable and raisable forepole

Country Status (1)

Country Link
GB (1) GB2162570B (en)

Also Published As

Publication number Publication date
GB2162570A (en) 1986-02-05
GB2162570B (en) 1987-06-10

Similar Documents

Publication Publication Date Title
DE3478045D1 (en) Mine roof support system
GB2152570B (en) Mine roof support unit
GB8600730D0 (en) Roof support system for mine
GB2115047B (en) Mine roof support system
AU555587B2 (en) Mine roof support
AU555601B2 (en) Mine roof support
AU563608B2 (en) Mine roof support
GB8424334D0 (en) Mine roof supports
GB8310348D0 (en) Roof support for mines
AU559794B2 (en) Mine roof support
GB2127885B (en) Mine roof support
GB2093102B (en) Mine roof support
GB2097454B (en) Mine roof support
GB2108559B (en) Mine roof support
GB8311695D0 (en) Mine roof support
GB8424927D0 (en) Mine roof support structure
GB8419655D0 (en) Roof support for mines
GB8311696D0 (en) Mine roof support
GB8426284D0 (en) Mine roof support
GB8406668D0 (en) Mine roof support
GB2201713B (en) Mine roof support
GB8405568D0 (en) Mine roof supports
GB8409793D0 (en) Roof support for mines
GB2182704B (en) Mine roof supports
PL250906A1 (en) Longwall roof support unit

Legal Events

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