FR547266A - Improvements in machines for tunneling in soil and soft rock - Google Patents

Improvements in machines for tunneling in soil and soft rock

Info

Publication number
FR547266A
FR547266A FR547266DA FR547266A FR 547266 A FR547266 A FR 547266A FR 547266D A FR547266D A FR 547266DA FR 547266 A FR547266 A FR 547266A
Authority
FR
France
Prior art keywords
tunneling
soil
machines
soft rock
rock
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)
Inventor
Harry Baker Arden
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 FR547266A publication Critical patent/FR547266A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/11—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
    • E21D9/112—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines by means of one single rotary head or of concentric rotary heads
    • E21D9/113—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines by means of one single rotary head or of concentric rotary heads having a central part for making a pilot tunnel and a follow-up part for enlarging the pilot tunnel

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR547266D 1919-01-17 1921-03-31 Improvements in machines for tunneling in soil and soft rock Expired FR547266A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US547266XA 1919-01-17 1919-01-17

Publications (1)

Publication Number Publication Date
FR547266A true FR547266A (en) 1922-12-05

Family

ID=21993105

Family Applications (1)

Application Number Title Priority Date Filing Date
FR547266D Expired FR547266A (en) 1919-01-17 1921-03-31 Improvements in machines for tunneling in soil and soft rock

Country Status (1)

Country Link
FR (1) FR547266A (en)

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