ES441499A1 - Una entibacion hidraulica progresiva para tajos de extrac- cion. - Google Patents

Una entibacion hidraulica progresiva para tajos de extrac- cion.

Info

Publication number
ES441499A1
ES441499A1 ES441499A ES441499A ES441499A1 ES 441499 A1 ES441499 A1 ES 441499A1 ES 441499 A ES441499 A ES 441499A ES 441499 A ES441499 A ES 441499A ES 441499 A1 ES441499 A1 ES 441499A1
Authority
ES
Spain
Prior art keywords
translation
extraction
shoring
machine
legally binding
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
ES441499A
Other languages
English (en)
Spanish (es)
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.)
Gewerkschaft Eisenhutte Westfalia GmbH
Original Assignee
Gewerkschaft Eisenhutte Westfalia GmbH
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 Gewerkschaft Eisenhutte Westfalia GmbH filed Critical Gewerkschaft Eisenhutte Westfalia GmbH
Publication of ES441499A1 publication Critical patent/ES441499A1/es
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
    • E21D23/082—Advancing mechanisms forming parts of the roof supports acting solely on the elements of the 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
    • E21D23/0034—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 comprising a goaf shield articulated to a base member
    • E21D23/0039—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 comprising a goaf shield articulated to a base member and supported by a strut or by a row of struts parallel to the working face

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)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Transmission Devices (AREA)
  • Extraction Or Liquid Replacement (AREA)
ES441499A 1974-11-12 1975-10-03 Una entibacion hidraulica progresiva para tajos de extrac- cion. Expired ES441499A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742453471 DE2453471C2 (de) 1974-11-12 1974-11-12 Schreitender hydraulischer Strebausbau

Publications (1)

Publication Number Publication Date
ES441499A1 true ES441499A1 (es) 1977-04-01

Family

ID=5930565

Family Applications (1)

Application Number Title Priority Date Filing Date
ES441499A Expired ES441499A1 (es) 1974-11-12 1975-10-03 Una entibacion hidraulica progresiva para tajos de extrac- cion.

Country Status (5)

Country Link
BE (1) BE833756A (pl)
DE (1) DE2453471C2 (pl)
ES (1) ES441499A1 (pl)
HU (1) HU174131B (pl)
PL (1) PL107137B1 (pl)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2744992C2 (de) * 1977-10-06 1989-09-21 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Schreitwerk für einen Schild- oder Bockausbau u.dgl.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB766537A (en) * 1953-02-25 1957-01-23 Coal Industry Patents Ltd Improvements in mine roof supports
DE2319910B2 (de) * 1973-04-19 1977-07-21 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Einrichtung zur niveausteuerung eines hobels o.dgl.

Also Published As

Publication number Publication date
DE2453471A1 (de) 1976-05-13
PL107137B1 (pl) 1980-01-31
DE2453471C2 (de) 1983-03-17
HU174131B (hu) 1979-11-28
BE833756A (fr) 1976-01-16

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