TW210371B - Digging operation method and device - Google Patents

Digging operation method and device Download PDF

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Publication number
TW210371B
TW210371B TW81104676A TW81104676A TW210371B TW 210371 B TW210371 B TW 210371B TW 81104676 A TW81104676 A TW 81104676A TW 81104676 A TW81104676 A TW 81104676A TW 210371 B TW210371 B TW 210371B
Authority
TW
Taiwan
Prior art keywords
bit
excavation
dth
casing
rod
Prior art date
Application number
TW81104676A
Other languages
English (en)
Chinese (zh)
Inventor
Nobuhiko Matsui
Original Assignee
Wakoh Company 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 Wakoh Company Ltd filed Critical Wakoh Company Ltd
Application granted granted Critical
Publication of TW210371B publication Critical patent/TW210371B/zh

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  • Earth Drilling (AREA)
TW81104676A 1992-02-21 1992-06-15 Digging operation method and device TW210371B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4034679A JP2530792B2 (ja) 1992-02-21 1992-02-21 掘削装置

Publications (1)

Publication Number Publication Date
TW210371B true TW210371B (en) 1993-08-01

Family

ID=12421108

Family Applications (1)

Application Number Title Priority Date Filing Date
TW81104676A TW210371B (en) 1992-02-21 1992-06-15 Digging operation method and device

Country Status (2)

Country Link
JP (1) JP2530792B2 (ja)
TW (1) TW210371B (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6902271B2 (ja) * 2017-10-06 2021-07-14 東洋企画株式会社 ダウンザホールドリリング装置
CN114776216A (zh) * 2022-04-22 2022-07-22 无锡泰恒基础工程有限公司 一种硬岩大直径桩施工设备及其施工工法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5010522B1 (ja) * 1970-05-29 1975-04-22
JPS6311789A (ja) * 1986-06-28 1988-01-19 日本エアドリルシステム株式会社 掘削装置

Also Published As

Publication number Publication date
JPH05231085A (ja) 1993-09-07
JP2530792B2 (ja) 1996-09-04

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