FR1112062A - Installation for progressive support for the advancement of underground or similar works - Google Patents

Installation for progressive support for the advancement of underground or similar works

Info

Publication number
FR1112062A
FR1112062A FR1112062DA FR1112062A FR 1112062 A FR1112062 A FR 1112062A FR 1112062D A FR1112062D A FR 1112062DA FR 1112062 A FR1112062 A FR 1112062A
Authority
FR
France
Prior art keywords
advancement
underground
installation
similar works
progressive 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.)
Expired
Application number
Other languages
French (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.)
Kloeckner Becorit Corp South Africa Pty Ltd
Original Assignee
Kloeckner Becorit Corp South Africa Pty 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 Kloeckner Becorit Corp South Africa Pty Ltd filed Critical Kloeckner Becorit Corp South Africa Pty Ltd
Application granted granted Critical
Publication of FR1112062A publication Critical patent/FR1112062A/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
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic 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
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices

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)
FR1112062D 1954-04-12 1954-08-04 Installation for progressive support for the advancement of underground or similar works Expired FR1112062A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1112062X 1954-04-12

Publications (1)

Publication Number Publication Date
FR1112062A true FR1112062A (en) 1956-03-08

Family

ID=7723753

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1112062D Expired FR1112062A (en) 1954-04-12 1954-08-04 Installation for progressive support for the advancement of underground or similar works

Country Status (1)

Country Link
FR (1) FR1112062A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2322319A1 (en) * 1975-08-23 1977-03-25 Saarbergwerke Ag RELIEF VALVE CONNECTING THE TWO CYLINDERS OF A TWO-STAGE TELESCOPIC HYDRAULIC SEAL

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2322319A1 (en) * 1975-08-23 1977-03-25 Saarbergwerke Ag RELIEF VALVE CONNECTING THE TWO CYLINDERS OF A TWO-STAGE TELESCOPIC HYDRAULIC SEAL

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