Device for the in-situ production of columns of stabilized and c

Details Device for the in-situ production of columns of stabilized and c Device for the in-situ production of columns of stabilized and c

1996-08-13

1998-04-14

Graysay, Tamara L.

Hydraulic and earth engineering

Earth treatment or control

Chemical

405233, 405241, 299 57, 299 68, E02D 312, E21C 100

Patent

active

057384657

ABSTRACT:
A device for drilling into the ground for the in-situ production of columns of stabilized and compacted soil, which comprises at least two parallel shafts, each shaft driving in rotation one auger, each auger being fitted with a loosening drill head. The shafts and the shanks of the augers include a bore and at least one orifice for discharging a filler material, the augers having opposite hands and being driven in counterrotation, and which furthermore have a drive for reversing the direction of rotation of the augers, said device including an even number n, at least equal to 4, of augers and in that, as seen in cross-section, the axes of the augers are centered at the vertices of a regular n-sided polygon.

REFERENCES:
patent: 3305271 (1967-02-01), Galis et al.
patent: 4537536 (1985-08-01), Tsubonuma et al.
patent: 4662792 (1987-05-01), Gessay
patent: 5163784 (1992-11-01), Kunito
patent: 5275513 (1994-01-01), Geary et al.
patent: 5417522 (1995-05-01), Kono et al.

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