METHOD OF CREATION OF WATERPROOF INTERFACE OF GROUT CUTOFF CONSTRUCTED ON SITE WITH UNEQUAL HEIGHT MARKS BY SLURRY WALL METHOD Russian patent published in 2015 - IPC E02B3/16 

FIELD: construction.

SUBSTANCE: the method includes construction of continuous grout cutoff from the separate bays joined among themselves by means of waterproof interfaces. To get continuity and water tightness of the grout cutoff on unequal height marks it is performed in two stages. At the first stage using the traditional method "slurry wall" the grout cutoff 1 is erected on the lower mark -5.00 of its route, after erection of the grout cutoff 1 with the length, for example, 50 m and shrinkage of impervious material, it is additionally backfilled with impervious material to the shrinkage value plus 0.2-0.3 m above the trench line, then on an grout cutoff 1 at the mark -5.00 ground is backfilled with the natural slope 4, with layer-by-layer condensing to the mark 0.00 on which the site 6 is formed for driving of the first odd bay on the top route of the grout cutoff 1. Then the second stage is started at the top mark 0.00 the grout cutoff 5 is started with driving of the first odd bay 8 so that to cross it on the lower mark with the first odd catch of an grout bay 1 at the mark -5.00 with depression into the impervious stratum 11 down to the mark of the bottom of the lower bay after that the passable bays are filled with impervious material, and after its shrinkage and consolidation the waterproof interfaces 10 and 13 are formed between the first odd bays and even bays of grout cutoffs 1 and 7 at the marks -5.00 and 0.00.

EFFECT: possibility of creation of the grout cutoff at the unequal height marks and providing its water tightness in the interface between bays.

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