Title:
GROUND PENETRATION METHOD USING FRICTION REDUCTION MATERIAL-CONTAINING HIGH PRESSURE WATER
Document Type and Number:
Japanese Patent JP2022026977
Kind Code:
A
Abstract:
To provide a ground penetration method for drilling the ground by injecting high pressure water and penetrating a structure into the ground which reduces disturbance of a peripheral ground by the high pressure water and can obtain sufficient bearing capacity of the structure after construction.SOLUTION: High pressure water contains a friction reduction material for enhancing viscosity thereof so as to reduce friction with the ground. The friction reduction material is a water-soluble polymer, a combination of a water-soluble polymer and a surface active agent, or a cellulose fiber having a cellulose I type crystal structure. A ground penetration method includes the steps of preparing a raw liquid containing the friction reduction material having higher concentration than concentration of the friction reduction material at the time of injection of high pressure water, and mixing the raw liquid on a path for transferring the high pressure water.SELECTED DRAWING: Figure 3
Inventors:
KITAMURA TAKUYA
KATO TSUTOMU
INOUE TOSHIO
MOROHASHI YOHEI
KATO TSUTOMU
INOUE TOSHIO
MOROHASHI YOHEI
Application Number:
JP2020130712A
Publication Date:
February 10, 2022
Filing Date:
July 31, 2020
Export Citation:
Assignee:
CHOWA KOGYO KK
International Classes:
E02D7/24; C09K3/00; E02D7/20
Attorney, Agent or Firm:
Takashiro Kojima
Noriko Kawai
Noriko Kawai