JPH02153189A - 掘削装置と掘削方法 - Google Patents

掘削装置と掘削方法

Info

Publication number
JPH02153189A
JPH02153189A JP30624388A JP30624388A JPH02153189A JP H02153189 A JPH02153189 A JP H02153189A JP 30624388 A JP30624388 A JP 30624388A JP 30624388 A JP30624388 A JP 30624388A JP H02153189 A JPH02153189 A JP H02153189A
Authority
JP
Japan
Prior art keywords
excavation
pipe
bit
drilling
bit device
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
JP30624388A
Other languages
English (en)
Japanese (ja)
Other versions
JPH055993B2 (enrdf_load_stackoverflow
Inventor
Kenji Kagota
篭田 憲二
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP30624388A priority Critical patent/JPH02153189A/ja
Publication of JPH02153189A publication Critical patent/JPH02153189A/ja
Publication of JPH055993B2 publication Critical patent/JPH055993B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP30624388A 1988-12-02 1988-12-02 掘削装置と掘削方法 Granted JPH02153189A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30624388A JPH02153189A (ja) 1988-12-02 1988-12-02 掘削装置と掘削方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30624388A JPH02153189A (ja) 1988-12-02 1988-12-02 掘削装置と掘削方法

Publications (2)

Publication Number Publication Date
JPH02153189A true JPH02153189A (ja) 1990-06-12
JPH055993B2 JPH055993B2 (enrdf_load_stackoverflow) 1993-01-25

Family

ID=17954726

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30624388A Granted JPH02153189A (ja) 1988-12-02 1988-12-02 掘削装置と掘削方法

Country Status (1)

Country Link
JP (1) JPH02153189A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPH055993B2 (enrdf_load_stackoverflow) 1993-01-25

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