AU1707767A - Improvements relating to roof supports for mine workings - Google Patents

Improvements relating to roof supports for mine workings

Info

Publication number
AU1707767A
AU1707767A AU17077/67A AU1707767A AU1707767A AU 1707767 A AU1707767 A AU 1707767A AU 17077/67 A AU17077/67 A AU 17077/67A AU 1707767 A AU1707767 A AU 1707767A AU 1707767 A AU1707767 A AU 1707767A
Authority
AU
Australia
Prior art keywords
improvements relating
roof supports
mine workings
workings
mine
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
AU17077/67A
Inventor
Maria Groetschel Karl
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AU17077/67A priority Critical patent/AU1707767A/en
Publication of AU1707767A publication Critical patent/AU1707767A/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
    • E21D23/08—Advancing mechanisms
    • E21D23/081—Advancing mechanisms forming parts of the roof supports
    • 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
    • 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)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
AU17077/67A 1967-01-31 1967-01-31 Improvements relating to roof supports for mine workings Expired AU1707767A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU17077/67A AU1707767A (en) 1967-01-31 1967-01-31 Improvements relating to roof supports for mine workings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU17077/67A AU1707767A (en) 1967-01-31 1967-01-31 Improvements relating to roof supports for mine workings

Related Child Applications (1)

Application Number Title Priority Date Filing Date
AU4587/66A Division AU458766A (en) 1966-04-21 Improvements relating to roof supports for mine workings

Publications (1)

Publication Number Publication Date
AU1707767A true AU1707767A (en) 1967-10-26

Family

ID=3706900

Family Applications (1)

Application Number Title Priority Date Filing Date
AU17077/67A Expired AU1707767A (en) 1967-01-31 1967-01-31 Improvements relating to roof supports for mine workings

Country Status (1)

Country Link
AU (1) AU1707767A (en)

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