JPH0520554B2 - - Google Patents

Info

Publication number
JPH0520554B2
JPH0520554B2 JP60228575A JP22857585A JPH0520554B2 JP H0520554 B2 JPH0520554 B2 JP H0520554B2 JP 60228575 A JP60228575 A JP 60228575A JP 22857585 A JP22857585 A JP 22857585A JP H0520554 B2 JPH0520554 B2 JP H0520554B2
Authority
JP
Japan
Prior art keywords
arcuate
pipe
curved
ground
ratchet pawl
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 - Lifetime
Application number
JP60228575A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6290492A (ja
Inventor
Nakaji Tashiro
Yukinobu Yamamoto
Kosaburo Tsucha
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.)
Obayashi Corp
Original Assignee
Obayashi 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 Obayashi Corp filed Critical Obayashi Corp
Priority to JP60228575A priority Critical patent/JPS6290492A/ja
Publication of JPS6290492A publication Critical patent/JPS6290492A/ja
Publication of JPH0520554B2 publication Critical patent/JPH0520554B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
  • Earth Drilling (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
JP60228575A 1985-10-14 1985-10-14 弧状孔穿孔装置 Granted JPS6290492A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60228575A JPS6290492A (ja) 1985-10-14 1985-10-14 弧状孔穿孔装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60228575A JPS6290492A (ja) 1985-10-14 1985-10-14 弧状孔穿孔装置

Publications (2)

Publication Number Publication Date
JPS6290492A JPS6290492A (ja) 1987-04-24
JPH0520554B2 true JPH0520554B2 (enrdf_load_stackoverflow) 1993-03-19

Family

ID=16878511

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60228575A Granted JPS6290492A (ja) 1985-10-14 1985-10-14 弧状孔穿孔装置

Country Status (1)

Country Link
JP (1) JPS6290492A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007100463A (ja) * 2005-10-07 2007-04-19 Taisei Corp 曲線推進工法及びその工法に用いられる元押しジャッキ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007100463A (ja) * 2005-10-07 2007-04-19 Taisei Corp 曲線推進工法及びその工法に用いられる元押しジャッキ

Also Published As

Publication number Publication date
JPS6290492A (ja) 1987-04-24

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