Method and apparatus for forming an underground solidification s

Details Method and apparatus for forming an underground solidification s Method and apparatus for forming an underground solidification s

1985-04-30

1987-02-03

Taylor, Dennis L.

Hydraulic and earth engineering

Foundation

Columnar structure

405248, 405233, E02D 310

Patent

active

046406492

ABSTRACT:
A method and apparatus for forming solidification structures in the underground (G) in which an insertion tube assembly (A) having a bit (12), an ultrasonic sensor (15) at the leading end thereof and an external nozzle direction monitoring device is inserted into the underground. While being rotated alternately in one and the other directions to dig a cavity in the ground, filling liquid is spouted into the cavity in the underground. The filling liquid is sucked upwardly through the insertion tube assembly together with the soil displaced by the digging of the cavity onto the ground where the liquid is separated from the soil. The filling liquid is recycled to the cavity to protect the wall of the cavity against collapsing. The filling liquid-soil suction and liquid recycling procedure is repeated until the cavity is dug to a predetermined depth. The direction of the jet nozzle (3) in the insertion tube assembly (A) at the predetermined depth of the cavity is monitored. The digging material is spouted through the jet nozzle (3) into the cavity to form the cavity (41) to a predetermined shape and solidification material is filled in the cavity (41) while monitoring the shape of the cavity 41 by the ultrasonic sensor (15) to thereby form a solidification structure in the underground.

REFERENCES:
patent: 3808823 (1974-05-01), Chelminski
patent: 3839875 (1974-10-01), Matsushita
patent: 3969902 (1976-07-01), Ichise et al.

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