JPS6160957B2 - - Google Patents

Info

Publication number
JPS6160957B2
JPS6160957B2 JP7801079A JP7801079A JPS6160957B2 JP S6160957 B2 JPS6160957 B2 JP S6160957B2 JP 7801079 A JP7801079 A JP 7801079A JP 7801079 A JP7801079 A JP 7801079A JP S6160957 B2 JPS6160957 B2 JP S6160957B2
Authority
JP
Japan
Prior art keywords
hole
pipe
diameter pipe
diameter
large 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.)
Expired
Application number
JP7801079A
Other languages
English (en)
Japanese (ja)
Other versions
JPS563795A (en
Inventor
Nobuo Myajima
Kyokatsu Hara
Yasuo Sasaki
Hisashi Hasegawa
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 Steel Corp
Original Assignee
Nippon Steel 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 Steel Corp filed Critical Nippon Steel Corp
Priority to JP7801079A priority Critical patent/JPS563795A/ja
Publication of JPS563795A publication Critical patent/JPS563795A/ja
Publication of JPS6160957B2 publication Critical patent/JPS6160957B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
JP7801079A 1979-06-22 1979-06-22 Method of inserting largeediameter pipe while expanding curved hole of small diameter Granted JPS563795A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7801079A JPS563795A (en) 1979-06-22 1979-06-22 Method of inserting largeediameter pipe while expanding curved hole of small diameter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7801079A JPS563795A (en) 1979-06-22 1979-06-22 Method of inserting largeediameter pipe while expanding curved hole of small diameter

Publications (2)

Publication Number Publication Date
JPS563795A JPS563795A (en) 1981-01-16
JPS6160957B2 true JPS6160957B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1986-12-23

Family

ID=13649810

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7801079A Granted JPS563795A (en) 1979-06-22 1979-06-22 Method of inserting largeediameter pipe while expanding curved hole of small diameter

Country Status (1)

Country Link
JP (1) JPS563795A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Also Published As

Publication number Publication date
JPS563795A (en) 1981-01-16

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