FR2313549B1 - - Google Patents

Info

Publication number
FR2313549B1
FR2313549B1 FR7518330A FR7518330A FR2313549B1 FR 2313549 B1 FR2313549 B1 FR 2313549B1 FR 7518330 A FR7518330 A FR 7518330A FR 7518330 A FR7518330 A FR 7518330A FR 2313549 B1 FR2313549 B1 FR 2313549B1
Authority
FR
France
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
FR7518330A
Other languages
French (fr)
Other versions
FR2313549A1 (fr
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.)
Bennes Marrel SA
Original Assignee
Bennes Marrel SA
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 Bennes Marrel SA filed Critical Bennes Marrel SA
Priority to FR7518330A priority Critical patent/FR2313549A1/fr
Priority to GB2338476A priority patent/GB1555228A/en
Priority to DE19762625622 priority patent/DE2625622A1/de
Publication of FR2313549A1 publication Critical patent/FR2313549A1/fr
Application granted granted Critical
Publication of FR2313549B1 publication Critical patent/FR2313549B1/fr
Granted 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
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting 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
    • E21D23/0034—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)
  • Fluid-Pressure Circuits (AREA)
FR7518330A 1975-06-06 1975-06-06 Pile a fleche avec chapeau, prevue pour assurer le soutenement dans les mines Granted FR2313549A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7518330A FR2313549A1 (fr) 1975-06-06 1975-06-06 Pile a fleche avec chapeau, prevue pour assurer le soutenement dans les mines
GB2338476A GB1555228A (en) 1975-06-06 1976-06-07 Mine roof support
DE19762625622 DE2625622A1 (de) 1975-06-06 1976-06-08 Hydraulischer auslegerstempel fuer den strebbau in gruben

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7518330A FR2313549A1 (fr) 1975-06-06 1975-06-06 Pile a fleche avec chapeau, prevue pour assurer le soutenement dans les mines

Publications (2)

Publication Number Publication Date
FR2313549A1 FR2313549A1 (fr) 1976-12-31
FR2313549B1 true FR2313549B1 (en:Method) 1982-10-29

Family

ID=9156399

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7518330A Granted FR2313549A1 (fr) 1975-06-06 1975-06-06 Pile a fleche avec chapeau, prevue pour assurer le soutenement dans les mines

Country Status (3)

Country Link
DE (1) DE2625622A1 (en:Method)
FR (1) FR2313549A1 (en:Method)
GB (1) GB1555228A (en:Method)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3100093A1 (de) * 1981-01-03 1982-08-05 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Vorrichtung zur begrenzung des ausbauwiderstandes eines hydraulischen ausbauschildes
DE3042749C2 (de) * 1980-11-13 1983-06-01 Bergwerksverband Gmbh, 4300 Essen Verfahren zur Steuerung von Schildausbau

Also Published As

Publication number Publication date
GB1555228A (en) 1979-11-07
DE2625622A1 (de) 1976-12-23
FR2313549A1 (fr) 1976-12-31

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Legal Events

Date Code Title Description
ST Notification of lapse