FR1460763A - Protective shield for tunneling - Google Patents

Protective shield for tunneling

Info

Publication number
FR1460763A
FR1460763A FR34537A FR34537A FR1460763A FR 1460763 A FR1460763 A FR 1460763A FR 34537 A FR34537 A FR 34537A FR 34537 A FR34537 A FR 34537A FR 1460763 A FR1460763 A FR 1460763A
Authority
FR
France
Prior art keywords
tunneling
protective shield
shield
protective
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
FR34537A
Other languages
French (fr)
Inventor
Jean Lucien Bobin
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
Priority to FR34537A priority Critical patent/FR1460763A/en
Application granted granted Critical
Publication of FR1460763A publication Critical patent/FR1460763A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D19/00—Provisional protective covers for working space
    • E21D19/04—Provisional protective covers for working space for use in drifting galleries

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)
FR34537A 1965-10-11 1965-10-11 Protective shield for tunneling Expired FR1460763A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR34537A FR1460763A (en) 1965-10-11 1965-10-11 Protective shield for tunneling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR34537A FR1460763A (en) 1965-10-11 1965-10-11 Protective shield for tunneling

Publications (1)

Publication Number Publication Date
FR1460763A true FR1460763A (en) 1966-01-07

Family

ID=8590196

Family Applications (1)

Application Number Title Priority Date Filing Date
FR34537A Expired FR1460763A (en) 1965-10-11 1965-10-11 Protective shield for tunneling

Country Status (1)

Country Link
FR (1) FR1460763A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2625768A1 (en) * 1988-01-04 1989-07-13 Sp K Tekhn SUPPORT OF A CALOTIC SLOT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2625768A1 (en) * 1988-01-04 1989-07-13 Sp K Tekhn SUPPORT OF A CALOTIC SLOT

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