FR547266A - Improvements in machines for tunneling in soil and soft rock - Google Patents
Improvements in machines for tunneling in soil and soft rockInfo
- 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
Links
- 239000011435 rock Substances 0.000 title 1
- 239000002689 soil Substances 0.000 title 1
- 230000005641 tunneling Effects 0.000 title 1
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)
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) |
-
1921
- 1921-03-31 FR FR547266D patent/FR547266A/en not_active Expired
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