JPS5751323A - Method and apparatus for improving soft ground - Google Patents

Method and apparatus for improving soft ground

Info

Publication number
JPS5751323A
JPS5751323A JP12412180A JP12412180A JPS5751323A JP S5751323 A JPS5751323 A JP S5751323A JP 12412180 A JP12412180 A JP 12412180A JP 12412180 A JP12412180 A JP 12412180A JP S5751323 A JPS5751323 A JP S5751323A
Authority
JP
Japan
Prior art keywords
rod
tip
hardening agent
injection rod
doughnut
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
JP12412180A
Other languages
Japanese (ja)
Inventor
Wataru Nakanishi
Minoru Tsujita
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.)
ENU AI TEI KK
ONODA CEMENT KK
Onoda Cement Co Ltd
NIT Co Ltd Japan
NIT Inc
Original Assignee
ENU AI TEI KK
ONODA CEMENT KK
Onoda Cement Co Ltd
NIT Co Ltd Japan
NIT Inc
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 ENU AI TEI KK, ONODA CEMENT KK, Onoda Cement Co Ltd, NIT Co Ltd Japan, NIT Inc filed Critical ENU AI TEI KK
Priority to JP12412180A priority Critical patent/JPS5751323A/en
Publication of JPS5751323A publication Critical patent/JPS5751323A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a doughnut-shaped large-diameter hardened layer by a method in which a cross arm nozzle is projectionally provided to the side of the tip of an injection rod, and the rod is turned and lifted while jetting a hardening agent under high pressure from the tip.
CONSTITUTION: A cross arm nozzle 5 is projectionally provided to the side of the tip of an injection rod 2 capable of turning and moving vertically along a strut 4, and the injection rod 4 is penetrated down to a given depth while excavating the ground. Then, the rod 2 is turned and lifted while injecting the hardening agent under high pressure from a hose 9 in such a way as to construct a doughnut-shaped hardened layer while excavating and stirring soil in and around the turning locus by means of the jet stream of the hardening agent.
COPYRIGHT: (C)1982,JPO&Japio
JP12412180A 1980-09-09 1980-09-09 Method and apparatus for improving soft ground Pending JPS5751323A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12412180A JPS5751323A (en) 1980-09-09 1980-09-09 Method and apparatus for improving soft ground

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12412180A JPS5751323A (en) 1980-09-09 1980-09-09 Method and apparatus for improving soft ground

Publications (1)

Publication Number Publication Date
JPS5751323A true JPS5751323A (en) 1982-03-26

Family

ID=14877436

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12412180A Pending JPS5751323A (en) 1980-09-09 1980-09-09 Method and apparatus for improving soft ground

Country Status (1)

Country Link
JP (1) JPS5751323A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59150817A (en) * 1983-02-14 1984-08-29 Fudo Constr Co Ltd Ground treatment work by ground improving agent
EP0335709A2 (en) * 1988-03-31 1989-10-04 Kabushiki Kaisha Little Rock Shaft construction method
JPH04293815A (en) * 1991-03-20 1992-10-19 Eikou Sangyo Kk Jet stirring construction method and jet stirring device
US5217327A (en) * 1988-11-18 1993-06-08 N.I.T. Co., Ltd. Ground reforming method with a hardening material mixed and injected at a super high pressure and reforming device of same
US5382116A (en) * 1988-11-18 1995-01-17 N.I.T. Co., Ltd. Ground reforming method with a hardening material mixed and injected at a super high pressure and reforming device of same
JP2007132073A (en) * 2005-11-10 2007-05-31 Onoda Chemico Co Ltd High pressure injection agitating device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5234509A (en) * 1975-09-11 1977-03-16 Takenaka Komuten Co Subsoil improving method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5234509A (en) * 1975-09-11 1977-03-16 Takenaka Komuten Co Subsoil improving method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59150817A (en) * 1983-02-14 1984-08-29 Fudo Constr Co Ltd Ground treatment work by ground improving agent
JPH0360969B2 (en) * 1983-02-14 1991-09-18 Fudo Construction Co
EP0335709A2 (en) * 1988-03-31 1989-10-04 Kabushiki Kaisha Little Rock Shaft construction method
US5217327A (en) * 1988-11-18 1993-06-08 N.I.T. Co., Ltd. Ground reforming method with a hardening material mixed and injected at a super high pressure and reforming device of same
US5382116A (en) * 1988-11-18 1995-01-17 N.I.T. Co., Ltd. Ground reforming method with a hardening material mixed and injected at a super high pressure and reforming device of same
JPH04293815A (en) * 1991-03-20 1992-10-19 Eikou Sangyo Kk Jet stirring construction method and jet stirring device
JP2007132073A (en) * 2005-11-10 2007-05-31 Onoda Chemico Co Ltd High pressure injection agitating device

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