JPS56150289A - Hole excavating method and apparatus - Google Patents

Hole excavating method and apparatus

Info

Publication number
JPS56150289A
JPS56150289A JP5284980A JP5284980A JPS56150289A JP S56150289 A JPS56150289 A JP S56150289A JP 5284980 A JP5284980 A JP 5284980A JP 5284980 A JP5284980 A JP 5284980A JP S56150289 A JPS56150289 A JP S56150289A
Authority
JP
Japan
Prior art keywords
excavating method
hole excavating
hole
excavating
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
JP5284980A
Other languages
Japanese (ja)
Inventor
Hiroaki Tamaoki
Jiyouji Nakamura
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.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP5284980A priority Critical patent/JPS56150289A/en
Publication of JPS56150289A publication Critical patent/JPS56150289A/en
Pending legal-status Critical Current

Links

JP5284980A 1980-04-23 1980-04-23 Hole excavating method and apparatus Pending JPS56150289A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5284980A JPS56150289A (en) 1980-04-23 1980-04-23 Hole excavating method and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5284980A JPS56150289A (en) 1980-04-23 1980-04-23 Hole excavating method and apparatus

Publications (1)

Publication Number Publication Date
JPS56150289A true JPS56150289A (en) 1981-11-20

Family

ID=12926289

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5284980A Pending JPS56150289A (en) 1980-04-23 1980-04-23 Hole excavating method and apparatus

Country Status (1)

Country Link
JP (1) JPS56150289A (en)

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