CA942959A - Mine roof supports - Google Patents

Mine roof supports

Info

Publication number
CA942959A
CA942959A CA116,733A CA116733A CA942959A CA 942959 A CA942959 A CA 942959A CA 116733 A CA116733 A CA 116733A CA 942959 A CA942959 A CA 942959A
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
CA116,733A
Other versions
CA116733S (en
Inventor
David B. Smith
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.)
Fletcher Sutcliffe Wild Ltd
Original Assignee
Fletcher Sutcliffe Wild 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 Fletcher Sutcliffe Wild Ltd filed Critical Fletcher Sutcliffe Wild Ltd
Application granted granted Critical
Publication of CA942959A publication Critical patent/CA942959A/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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • 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
    • E21D23/0013—Frame type supports

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)
  • Body Structure For Vehicles (AREA)
  • Bridges Or Land Bridges (AREA)
  • Pivots And Pivotal Connections (AREA)
CA116,733A 1970-06-26 1971-06-25 Mine roof supports Expired CA942959A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3100570 1970-06-26

Publications (1)

Publication Number Publication Date
CA942959A true CA942959A (en) 1974-03-05

Family

ID=10316498

Family Applications (1)

Application Number Title Priority Date Filing Date
CA116,733A Expired CA942959A (en) 1970-06-26 1971-06-25 Mine roof supports

Country Status (3)

Country Link
US (1) US3754402A (en)
CA (1) CA942959A (en)
GB (1) GB1294917A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4796853A (en) * 1987-12-22 1989-01-10 General Motors Corporation Remotely configurable solenoid driver circuit for direct pressure electronic transmission control

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1180955A (en) * 1956-08-18 1959-06-10 Dobson Ltd W E & F Improvements to ceiling supports for underground mines
GB1037920A (en) * 1962-01-29 1966-08-03 Groetschel Karl Maria Improvements relating to roof supports for mine workings
GB1036663A (en) * 1964-04-03 1966-07-20 Gullick Ltd Improvements in or relating to mine roof and like supports
DE1281978B (en) * 1965-04-21 1968-11-07 Karl Maria Groetschel Dipl Ing Procedure for securing large areas of the hanging slope area exposed in the course of the cutting progress in mining operations
GB1182817A (en) * 1967-06-19 1970-03-04 Wild A G & Co Ltd Fluid-Operable Self-Advancing Mine Roof Support.
GB1234661A (en) * 1968-01-17 1971-06-09
DE1758753C3 (en) * 1968-08-02 1978-10-05 Hippel Geb. Weiss, Sophie Von, 7771 Oberstenweiler Hydraulic longwall construction

Also Published As

Publication number Publication date
GB1294917A (en) 1972-11-01
US3754402A (en) 1973-08-28
DE2131776A1 (en) 1972-01-05

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