JPS57140495A - Construction of small-diameter tunnel - Google Patents
Construction of small-diameter tunnelInfo
- Publication number
- JPS57140495A JPS57140495A JP2571381A JP2571381A JPS57140495A JP S57140495 A JPS57140495 A JP S57140495A JP 2571381 A JP2571381 A JP 2571381A JP 2571381 A JP2571381 A JP 2571381A JP S57140495 A JPS57140495 A JP S57140495A
- Authority
- JP
- Japan
- Prior art keywords
- construction
- small
- diameter tunnel
- tunnel
- diameter
- 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.)
- Pending
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2571381A JPS57140495A (en) | 1981-02-24 | 1981-02-24 | Construction of small-diameter tunnel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2571381A JPS57140495A (en) | 1981-02-24 | 1981-02-24 | Construction of small-diameter tunnel |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57140495A true JPS57140495A (en) | 1982-08-31 |
Family
ID=12173425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2571381A Pending JPS57140495A (en) | 1981-02-24 | 1981-02-24 | Construction of small-diameter tunnel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57140495A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS517735A (en) * | 1974-07-09 | 1976-01-22 | Tsugio Matsumura | Suidokojitoniokeru kutsusakudoshahanshutsusochi |
JPS55136399A (en) * | 1979-04-12 | 1980-10-24 | Nippon Telegraph & Telephone | Mechanical excavation shield |
-
1981
- 1981-02-24 JP JP2571381A patent/JPS57140495A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS517735A (en) * | 1974-07-09 | 1976-01-22 | Tsugio Matsumura | Suidokojitoniokeru kutsusakudoshahanshutsusochi |
JPS55136399A (en) * | 1979-04-12 | 1980-10-24 | Nippon Telegraph & Telephone | Mechanical excavation shield |
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