E - Fixed Constructions – 02 – D
Patent
E - Fixed Constructions
02
D
61/48
E02D 3/00 (2006.01) E02D 3/12 (2006.01)
Patent
CA 1232462
ABSTRACT OF THE DISCLOSURE A method and apparatus for forming solidification structures in the underground in which an insertion tube assembly having a bit , an ultrasonic sensor at the leading end thereof and an external nozzle direction monitoring means 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 in the insertion tube assembly at the predetermined depth of the cavity is monitored, digging material is spouted through the jet nozzle into the cavity to form the cavity to a predetermined shape and solidification material is filled in the cavity while monitoring the shape of the cavity by the ultrasonic monitor to thereby form a solidification structure in the underground.
479899
Marks & Clerk
N.i.t. Co. Ltd.
LandOfFree
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