JP2530116Y2 - 掘削孔の止水装置 - Google Patents

掘削孔の止水装置

Info

Publication number
JP2530116Y2
JP2530116Y2 JP1990406172U JP40617290U JP2530116Y2 JP 2530116 Y2 JP2530116 Y2 JP 2530116Y2 JP 1990406172 U JP1990406172 U JP 1990406172U JP 40617290 U JP40617290 U JP 40617290U JP 2530116 Y2 JP2530116 Y2 JP 2530116Y2
Authority
JP
Japan
Prior art keywords
hole
balloon
water
drilling
shield
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
JP1990406172U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0492094U (enExample
Inventor
子 豊 金
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.)
Koken Boring Machine Co Ltd
Original Assignee
Koken Boring Machine Co 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 Koken Boring Machine Co Ltd filed Critical Koken Boring Machine Co Ltd
Priority to JP1990406172U priority Critical patent/JP2530116Y2/ja
Publication of JPH0492094U publication Critical patent/JPH0492094U/ja
Application granted granted Critical
Publication of JP2530116Y2 publication Critical patent/JP2530116Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
JP1990406172U 1990-12-27 1990-12-27 掘削孔の止水装置 Expired - Lifetime JP2530116Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990406172U JP2530116Y2 (ja) 1990-12-27 1990-12-27 掘削孔の止水装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990406172U JP2530116Y2 (ja) 1990-12-27 1990-12-27 掘削孔の止水装置

Publications (2)

Publication Number Publication Date
JPH0492094U JPH0492094U (enExample) 1992-08-11
JP2530116Y2 true JP2530116Y2 (ja) 1997-03-26

Family

ID=31883471

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990406172U Expired - Lifetime JP2530116Y2 (ja) 1990-12-27 1990-12-27 掘削孔の止水装置

Country Status (1)

Country Link
JP (1) JP2530116Y2 (enExample)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4262702A (en) * 1979-12-20 1981-04-21 Halliburton Company Conductor pipe plug
JPS5741221Y2 (enExample) * 1980-08-02 1982-09-10

Also Published As

Publication number Publication date
JPH0492094U (enExample) 1992-08-11

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