FR1009667A - Dispositif de soutènement, notamment pour exploitations minières - Google Patents

Dispositif de soutènement, notamment pour exploitations minières

Info

Publication number
FR1009667A
FR1009667A FR1009667DA FR1009667A FR 1009667 A FR1009667 A FR 1009667A FR 1009667D A FR1009667D A FR 1009667DA FR 1009667 A FR1009667 A FR 1009667A
Authority
FR
France
Prior art keywords
support system
mining operations
mining
operations
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
English (en)
Inventor
Peter Ewald Zapp
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 filed Critical
Application granted granted Critical
Publication of FR1009667A publication Critical patent/FR1009667A/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • E21D17/08—Cap joints for obtaining a coal-face free of pit-props
    • E21D17/086—Cap joints for obtaining a coal-face free of pit-props or articulated type

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)
FR1009667D 1948-06-15 1948-06-15 Dispositif de soutènement, notamment pour exploitations minières Expired FR1009667A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1009667T 1948-06-15

Publications (1)

Publication Number Publication Date
FR1009667A true FR1009667A (fr) 1952-06-03

Family

ID=9568336

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1009667D Expired FR1009667A (fr) 1948-06-15 1948-06-15 Dispositif de soutènement, notamment pour exploitations minières

Country Status (1)

Country Link
FR (1) FR1009667A (fr)

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