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Title:
HIGH-PRESSURE INJECTION NOZZLE DEVICE AND GROUND IMPROVEMENT DEVICE ON WHICH SAME IS MOUNTED
Document Type and Number:
WIPO Patent Application WO/2018/168217
Kind Code:
A1
Abstract:
Conventional ground improvement devices suffer from the problem that because liquid hardening material is sent from a liquid hardening material supply pipe that is in the axial direction of an injection rod to a liquid hardening material injection nozzle that is substantially perpendicular to the injection rod, a portion of the flow of the liquid hardening material is in a turbulent state and the injection distance of the liquid hardening material to be injected from the liquid hardening material injection nozzle is short. With the present invention, the turbulent flow state of cement milk is disrupted, and the cement milk has a finer laminar flow with a uniform flow velocity distribution in each divided space by way of the cement milk being finely divided by a channel dividing unit 31x of a rear end inner diameter section 28x of a nozzle body 24x. In this way, the cutting ability of the cement milk injected from the tip of the nozzle body 24x is further increased and the cement milk can be injected a further distance.

Inventors:
MATSUMOTO TAKUYA (JP)
KOYANAGI TOSHIAKI (JP)
SAITOU KAZUHIDE (JP)
KAJITA EIJI (梶田　栄次)
Application Number:
PCT/JP2018/002359
Publication Date:
September 20, 2018
Filing Date:
January 25, 2018
Export Citation:
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Assignee:
KIBANGIKEN CO LTD (JP)
CHIKABOSUIKOGYO CO LTD (JP)
International Classes:
E02D3/12
Foreign References:
JP2008208620A2008-09-11
JP2003336251A2003-11-28
JP2004353298A2004-12-16
Attorney, Agent or Firm:
MAEDA Kenichi (JP)
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