Title:
高圧噴射撹拌工法及び噴射装置
Document Type and Number:
Japanese Patent JP7398281
Kind Code:
B2
Abstract:
To provide a technique through a high pressure injection-agitation method capable of forming an improvement body with a comparatively large formed diameter and stable quality in a shorter construction period.SOLUTION: A method forming an improvement body in the ground comprises steps of: inserting a double tube rod provided with a first nozzle 36 and a second nozzle 38 in a side surface into an improvement object ground; injecting solidification material liquid from each of the nozzles at a high pressure when pulling up the double tube rod as rotating or swinging it; and cutting the soil by injecting the solidification material liquid at the high pressure as well as agitating-mixing the cut soil and the solidification material liquid. The first nozzle 36 is to form jet flow 48 with relatively excellent cutting performance for the soil and the second nozzle 38 is to form jet flow 50 with relatively excellent agitating performance for the soil. The solidification material liquid is supplied to the first nozzle 36 and the second nozzle 38 through a common high pressure pump.SELECTED DRAWING: Figure 3
Inventors:
Masanori Kumekawa
Tadasuke Wada
Hiroyuki Abe
Tadasuke Wada
Hiroyuki Abe
Application Number:
JP2020001253A
Publication Date:
December 14, 2023
Filing Date:
January 08, 2020
Export Citation:
Assignee:
Chemical Grout Co., Ltd.
International Classes:
E02D3/12
Domestic Patent References:
| JP2001295263A | ||||
| JP7252822A | ||||
| JP2004353298A |
Attorney, Agent or Firm:
Hiroyuki Okuda
Noriyuki Okuda
Noriyuki Okuda