JPS57140495A - Construction of small-diameter tunnel - Google Patents

Construction of small-diameter tunnel

Info

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
Application number
JP2571381A
Other languages
Japanese (ja)
Inventor
Makoto Tachibana
Mamoru Katou
Miyuki Tsuruta
Noriyuki Miyasaka
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP2571381A priority Critical patent/JPS57140495A/en
Publication of JPS57140495A publication Critical patent/JPS57140495A/en
Pending legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
JP2571381A 1981-02-24 1981-02-24 Construction of small-diameter tunnel Pending JPS57140495A (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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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