JPS646410A - Method and apparatus for improving ground - Google Patents
Method and apparatus for improving groundInfo
- Publication number
- JPS646410A JPS646410A JP16065787A JP16065787A JPS646410A JP S646410 A JPS646410 A JP S646410A JP 16065787 A JP16065787 A JP 16065787A JP 16065787 A JP16065787 A JP 16065787A JP S646410 A JPS646410 A JP S646410A
- Authority
- JP
- Japan
- Prior art keywords
- ground
- blade
- stirring
- rod
- normally
- 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
Links
Abstract
PURPOSE:To prevent the deformation of the ground by avoiding the volumetric expansion of improve ground by a method in which during injection, stirring, and drawing processes, soil amount which almost coincides with the amount of a solidifying agent to be injected is discharged through a screw mechanisms. CONSTITUTION:A stirring head 11 having an opening or closing stirring blade 14 on the lower end of a screw rod 13 is connected to the rod body 10. The rod body 10 is normally turned in the closed state by the blade 14 until excavated to the lower end of an improving section, the blade 14 is opened and pulled up while turning normally and injecting a solidifying agent S with high pressures, and the soil is discharged by the rod 13 at the same time as the stirring is made. The rod 10 is pulled up by normally or reversely turning under the condition that the blade 14 is closed in the section not to be improved. Since the volumetric expansion of the improved ground can be avoided and the deformation of the ground can thereby be prevented, the effect on the surrounding underground structure can be obviated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16065787A JPS646410A (en) | 1987-06-27 | 1987-06-27 | Method and apparatus for improving ground |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16065787A JPS646410A (en) | 1987-06-27 | 1987-06-27 | Method and apparatus for improving ground |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS646410A true JPS646410A (en) | 1989-01-11 |
Family
ID=15719673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16065787A Pending JPS646410A (en) | 1987-06-27 | 1987-06-27 | Method and apparatus for improving ground |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS646410A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4633910A (en) * | 1984-07-11 | 1987-01-06 | Nobuyuki Sugimura | Pulsation absorbing means having one or more valve shoes divided into two parts each displays suitable function |
US4705077A (en) * | 1985-07-02 | 1987-11-10 | Nobuyuki Sugimura | Pulsation damping means incorporating therein an inner cylinder having laminated resilient valve shoes |
JPH02221512A (en) * | 1989-02-23 | 1990-09-04 | Shohei Senda | Method and apparatus for modifying weak ground |
JP2007186868A (en) * | 2006-01-12 | 2007-07-26 | Yuji Kaneko | Soil improving method and soil improving equipment |
JP2014145192A (en) * | 2013-01-29 | 2014-08-14 | Taisei Corp | Improvement body construction system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4934112A (en) * | 1972-08-02 | 1974-03-29 | ||
JPS6268917A (en) * | 1985-09-19 | 1987-03-30 | Fudo Constr Co Ltd | Improvement for weak ground |
-
1987
- 1987-06-27 JP JP16065787A patent/JPS646410A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4934112A (en) * | 1972-08-02 | 1974-03-29 | ||
JPS6268917A (en) * | 1985-09-19 | 1987-03-30 | Fudo Constr Co Ltd | Improvement for weak ground |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4633910A (en) * | 1984-07-11 | 1987-01-06 | Nobuyuki Sugimura | Pulsation absorbing means having one or more valve shoes divided into two parts each displays suitable function |
US4705077A (en) * | 1985-07-02 | 1987-11-10 | Nobuyuki Sugimura | Pulsation damping means incorporating therein an inner cylinder having laminated resilient valve shoes |
JPH02221512A (en) * | 1989-02-23 | 1990-09-04 | Shohei Senda | Method and apparatus for modifying weak ground |
JP2007186868A (en) * | 2006-01-12 | 2007-07-26 | Yuji Kaneko | Soil improving method and soil improving equipment |
JP2014145192A (en) * | 2013-01-29 | 2014-08-14 | Taisei Corp | Improvement body construction system |
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