E - Fixed Constructions – 02 – D
Patent
E - Fixed Constructions
02
D
61/53
E02D 3/12 (2006.01) E02D 5/18 (2006.01) E02F 5/10 (2006.01) E02F 5/12 (2006.01) E02F 9/06 (2006.01)
Patent
CA 1170467
"SLURRY TRENCH METHOD AND APPARATUS FOR CONSTRUCTING UNDERGROUND WALLS" ABSTRACT A system for constructing narrow underground walls utilizing the slurry trench method is disclosed wherein a first apparatus excavates from one end of a slurry filled trench and a second apparatus is utilized for filling the trench with a wall forming material and at least a part of the excavating and/or filling apparatus is floated on the slurry in the trench. In one disclosed embodiment, narrow cut-off walls are formed by excavating from one end of a slurry filled trench and backfilling the trench at the opposite end by depositing therein a mixture of exca- vated soil and bentonite slurry from the trench, and in- cludes a relatively large float adapted to be immersed in the slurry to prevent loading on the trench walls and stabilizing the apparatus for excavating purposes. In a further embodiment, in combination with a float-fin, low pressure tires or crawler treads bear a portion of the load and the distribution between the float and the ground engaging apparatus is accomplished by adjusting the bouy- ancy of the float, and the bouyancy of the float being adjusted by admitting or removing slurry or other liquid from the interior of the float.
382745
Finic B.v.
Macrae & Co.
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