Hydraulic and earth engineering – Earth treatment or control – Chemical
Patent
1996-06-11
1998-06-02
Taylor, Dennis L.
Hydraulic and earth engineering
Earth treatment or control
Chemical
405274, 405232, 405248, E02D 520
Patent
active
057589933
ABSTRACT:
A method and an apparatus is provided for forming successive overlapping voids in the ground along a predetermined course of travel and for producing a subterranean wall therein. The apparatus includes a mandrel for forming voids in the ground, and a pattern guide templet having repeating contours arranged on the ground for accurately guiding the mandrel along the predetermined course of travel during successive mandrel insertions. The mandrel includes a plurality of downwardly projecting spaced-apart cutting teeth for facilitating penetration of the mandrel into the ground, and a plurality of downwardly projecting high pressure nozzles for discharging an injectable material (e.g., slurry material or water) into the ground as the mandrel is inserted therein. The repeating contours of the pattern guide templet accurately receive and accommodate the cross-sectional shape of the mandrel during successive mandrel insertions so that successive overlapping voids are formed in the ground along the predetermined course of travel. The apparatus of the present invention further includes an installation rig for inserting structural elements into the successive overlapping voids formed by the mandrel. In this way, a subterranean wall comprised of liquid impervious slurry material and/or contiguous structural elements may be conveniently produced in the successive overlapping voids.
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Schmednecht Eric J.
Schmednecht Fred C.
Slurry Systems, Inc.
Taylor Dennis L.
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