JPS57140496A - Small-diameter tunnel excavation - Google Patents

Small-diameter tunnel excavation

Info

Publication number
JPS57140496A
JPS57140496A JP56025530A JP2553081A JPS57140496A JP S57140496 A JPS57140496 A JP S57140496A JP 56025530 A JP56025530 A JP 56025530A JP 2553081 A JP2553081 A JP 2553081A JP S57140496 A JPS57140496 A JP S57140496A
Authority
JP
Japan
Prior art keywords
small
tunnel excavation
diameter tunnel
diameter
excavation
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.)
Granted
Application number
JP56025530A
Other languages
Japanese (ja)
Other versions
JPS612159B2 (en
Inventor
Yoshihiko Nomura
Riyousuke Arioka
Sumio Mori
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 JP56025530A priority Critical patent/JPS57140496A/en
Publication of JPS57140496A publication Critical patent/JPS57140496A/en
Publication of JPS612159B2 publication Critical patent/JPS612159B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
  • Lining And Supports For Tunnels (AREA)
JP56025530A 1981-02-25 1981-02-25 Small-diameter tunnel excavation Granted JPS57140496A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56025530A JPS57140496A (en) 1981-02-25 1981-02-25 Small-diameter tunnel excavation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56025530A JPS57140496A (en) 1981-02-25 1981-02-25 Small-diameter tunnel excavation

Publications (2)

Publication Number Publication Date
JPS57140496A true JPS57140496A (en) 1982-08-31
JPS612159B2 JPS612159B2 (en) 1986-01-22

Family

ID=12168584

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56025530A Granted JPS57140496A (en) 1981-02-25 1981-02-25 Small-diameter tunnel excavation

Country Status (1)

Country Link
JP (1) JPS57140496A (en)

Also Published As

Publication number Publication date
JPS612159B2 (en) 1986-01-22

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