JPS631437B2 - - Google Patents

Info

Publication number
JPS631437B2
JPS631437B2 JP11578382A JP11578382A JPS631437B2 JP S631437 B2 JPS631437 B2 JP S631437B2 JP 11578382 A JP11578382 A JP 11578382A JP 11578382 A JP11578382 A JP 11578382A JP S631437 B2 JPS631437 B2 JP S631437B2
Authority
JP
Japan
Prior art keywords
drilling
small holes
diameter
holes
hole
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
JP11578382A
Other languages
English (en)
Japanese (ja)
Other versions
JPS598893A (ja
Inventor
Noboru Kozasa
Koji Tanabe
Kazuo Haga
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.)
YAMAMOTO TETSUKOSHO KK
Original Assignee
YAMAMOTO TETSUKOSHO KK
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 YAMAMOTO TETSUKOSHO KK filed Critical YAMAMOTO TETSUKOSHO KK
Priority to JP11578382A priority Critical patent/JPS598893A/ja
Publication of JPS598893A publication Critical patent/JPS598893A/ja
Publication of JPS631437B2 publication Critical patent/JPS631437B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP11578382A 1982-07-02 1982-07-02 穿孔方法 Granted JPS598893A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11578382A JPS598893A (ja) 1982-07-02 1982-07-02 穿孔方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11578382A JPS598893A (ja) 1982-07-02 1982-07-02 穿孔方法

Publications (2)

Publication Number Publication Date
JPS598893A JPS598893A (ja) 1984-01-18
JPS631437B2 true JPS631437B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1988-01-12

Family

ID=14670947

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11578382A Granted JPS598893A (ja) 1982-07-02 1982-07-02 穿孔方法

Country Status (1)

Country Link
JP (1) JPS598893A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5281469B2 (ja) * 2009-04-24 2013-09-04 株式会社サンリツ 既設マンホールのインバート撤去方法
JP7484452B2 (ja) * 2020-06-08 2024-05-16 株式会社大林組 コア採取方法

Also Published As

Publication number Publication date
JPS598893A (ja) 1984-01-18

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