FR1320148A - Soutènements marchants à piles jumelées - Google Patents

Soutènements marchants à piles jumelées

Info

Publication number
FR1320148A
FR1320148A FR885790A FR885790A FR1320148A FR 1320148 A FR1320148 A FR 1320148A FR 885790 A FR885790 A FR 885790A FR 885790 A FR885790 A FR 885790A FR 1320148 A FR1320148 A FR 1320148A
Authority
FR
France
Prior art keywords
piers
twin
walking supports
walking
supports
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
FR885790A
Other languages
English (en)
Inventor
Robert Coeuillet
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.)
Charbonnages de France CDF
Original Assignee
Charbonnages de France CDF
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 Charbonnages de France CDF filed Critical Charbonnages de France CDF
Priority to FR885790A priority Critical patent/FR1320148A/fr
Application granted granted Critical
Publication of FR1320148A publication Critical patent/FR1320148A/fr
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
    • E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith

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)
FR885790A 1962-01-24 1962-01-24 Soutènements marchants à piles jumelées Expired FR1320148A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR885790A FR1320148A (fr) 1962-01-24 1962-01-24 Soutènements marchants à piles jumelées

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR885790A FR1320148A (fr) 1962-01-24 1962-01-24 Soutènements marchants à piles jumelées

Publications (1)

Publication Number Publication Date
FR1320148A true FR1320148A (fr) 1963-03-08

Family

ID=8771140

Family Applications (1)

Application Number Title Priority Date Filing Date
FR885790A Expired FR1320148A (fr) 1962-01-24 1962-01-24 Soutènements marchants à piles jumelées

Country Status (1)

Country Link
FR (1) FR1320148A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3342034A (en) * 1963-06-21 1967-09-19 Dowty Mining Equipment Ltd Roof supports
US3383866A (en) * 1964-12-07 1968-05-21 Karl M. Groetschel Roof supports for mine workings

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3342034A (en) * 1963-06-21 1967-09-19 Dowty Mining Equipment Ltd Roof supports
US3383866A (en) * 1964-12-07 1968-05-21 Karl M. Groetschel Roof supports for mine workings

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