METHOD FOR RECLAMATION OF WORKED-OUT PITS Russian patent published in 2012 - IPC E21C41/32 

FIELD: environment protection.

SUBSTANCE: the invention relates to reclamation of worked-out pits. The method includes backfilling of worked-out space up to the upper underground water level by construction waste close to minerals by composition, and setting drainage layer. After the pit is filled with construction waste, terracing is carried out using a bulldozer. Furthermore, at first the area is divided and ribs are plowed, the ribs indicate the borders of future terraces. The bed of each terrace is formed by a bulldozer with reverse crossfall up to 2 degrees. Support walls are erected along the whole perimeter of the pit and drainage system is installed, while decorative plants, lawns and gardens are organized.

EFFECT: reduced labour intensity of worked-out pits reclamation, soil is protected from wind and water erosion.

2 cl, 1 dwg