Hydraulic and earth engineering – Earth treatment or control – Chemical
Patent
1992-04-20
1993-06-08
Taylor, Dennis L.
Hydraulic and earth engineering
Earth treatment or control
Chemical
405266, E02D 312
Patent
active
052173275
ABSTRACT:
A ground reforming method comprises a first step for inserting an injection rod into ground to be reformed, which injection rod includes a first conduit and a second conduit surrounding the first conduit, and a first injection nozzle communicated with the first conduit and a second injection nozzle surrounding the first nozzle and communicated with the second conduit; a second step for feeding first component of an instantaneous hardening type hardening material into the first conduit of the injection rod and a second component of the hardening material (or compressed gas) into the second conduit; and a third step for injecting the first component and the second component (or compressed gas) at a super high pressure through the first and second nozzles to mix each other with moving back the injection rod from the inserted portion with revolving.
REFERENCES:
patent: 3608318 (1971-09-01), Levy et al.
patent: 4624606 (1986-11-01), Nakanishi et al.
patent: 4640649 (1987-02-01), Nakanishi
patent: 4786212 (1988-11-01), Bauer et al.
patent: 5123782 (1992-06-01), Yoshida et al.
patent: 5141366 (1992-08-01), Ishida et al.
Berenato, III Joseph W.
N.I.T. Co., Ltd.
Ricci John A.
Taylor Dennis L.
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