METHOD FOR RECLAMATION OF SLUDGE POND COMPARTMENT FILLED WITH GRAINY WASTES OF INDUSTRIAL ENTERPRISES Russian patent published in 2010 - IPC E21C41/32 E02B7/06 

FIELD: construction.

SUBSTANCE: invention relates to hydraulic engineering and may be used in reclamation of sludge ponds. Method includes formation of reclamation body over compartment from wastes in tiers, and its outer surface is faced as convex with specified height, and this surface is coated with soil layer. Each tier is arranged by inwash of tier body to form settling pond and beach zone, realised under protection of barrier element erected along perimetre of tier with earth-moving equipment and providing for giving the reclamation body specified shape of external surface within the height of tier body. Barrier element in cross section is erected serially in parts. At first upstream fill is erected from soil material, then beach zone wastes are used to erect downstream fill, afterwards head wall is arranged from soil material suitable for further coating of external surface of reclamation body. Head wall is arranged over upstream fill and partially over downstream fill. It consists of temporary (cut) part and permanent, which forms a layer of soil with variable thickness over upstream fill and partially over downstream fill. Downstream fill is erected by means of excavator, which is equipped with dragline, moves in upstream fill, processes wastes of beach zone and puts them down into downstream fill. External surface is shaped as specified, afterwards it is coated with a layer of soil material taken from temporary part of head wall in barrier element of previous tier. Area of cross section in temporary part of head wall Wg in erected barrier element satisfies the following condition: w_B<bxe_S> where b - width of outer surface of downstream fill in barrier element subject to coating intended to erect the tier following in height by inwash; e_S - thickness of soil layer. If a drain trench is arranged along compartment perimetre on upstream side from its barrier dam, its depth provides for lowering surface of soil water in body and foundation of barrier element in lower tiers of recultivation body below foot of layer of their seasonal freezing.

EFFECT: reduced costs and environmental expenses, increased reliability and wider field of application.

5 cl, 3 dwg