Title:
GROUND HARDENER INJECTION METHOD
Document Type and Number:
Japanese Patent JP2019112776
Kind Code:
A
Abstract:
To solve the conventional problem, that is, as a ground hardener for forming a hardening layer is injected by superhigh pressure, and an injecting and filling process is carried out simultaneously with cutting, much of the ground hardener is discharged as sludge from a pit to be wasted before the injecting and filling process, and discharging of slime caused by forcible agitation not compatible to a ground structure forms an unbalance fusion layer.SOLUTION: A cavity region S is formed corresponding to the structure of a target ground by rotating a rod 1 downward or upward while injecting fresh water from a core nozzle 21 of a polymerization injection nozzle and air from a surrounding nozzle 22. Thus, discharge energy of the hardener injected by superhigh pressure is absorbed in the cavity region S.SELECTED DRAWING: Figure 4
Inventors:
NAKANISHI YASUHARU
FUKADA SHINICHI
KOMAKI TAKAHIRO
NIIZAKA TAKASHI
FUKADA SHINICHI
KOMAKI TAKAHIRO
NIIZAKA TAKASHI
Application Number:
JP2017244807A
Publication Date:
July 11, 2019
Filing Date:
December 21, 2017
Export Citation:
Assignee:
NIT CO LTD
TOYO SANGYO CO LTD
SANSHIN CORP
TOYO SANGYO CO LTD
SANSHIN CORP
International Classes:
E02D3/12
Domestic Patent References:
| JPH1088564A | 1998-04-07 | |||
| JPH09279566A | 1997-10-28 | |||
| JPH01318616A | 1989-12-25 | |||
| JPH0227015A | 1990-01-29 |
Attorney, Agent or Firm:
Kokichi Ishikawa
Kimura Mitsuru
Takanori Mamoru
Taiji Morikawa
Tetsuro Sandpit
Kimura Mitsuru
Takanori Mamoru
Taiji Morikawa
Tetsuro Sandpit