METHOD OF DEVELOPING BEDDED DEPOSITS WITH DRAG-LINES Russian patent published in 2016 - IPC E21C41/30 

FIELD: mining.

SUBSTANCE: invention relates to mining and can be used in developing sands of placers, coal, sloping or inclined deposits of minerals using direct dumping methods. Initially on end side of cut are mined bottom part of bench, created by width of cut on basement rocks free strip to lower edge of end side of ledge and hot empty rock is dumped into dump with longitudinal side of ledge without its bedding. Mineral is dumped in bulk on surface. Then rock is removed from end side of upper part of ledge and arranged in dump by strip at end of lower part of ledge and slope of pit wall, dump expanded along arc in direction of dump arranged at longitudinal side of ledge. For creation of surface relief, which meets accepted direction of recultivation, dump in worked-out area at points of dumping is formed with different height.

EFFECT: technical result consists in increasing of internal dump volume, dumped from one location of excavator due to use of additional mined space in end part of ledge, and reclamation, which includes preliminary levelling surface to make main volume of earthwork by drag line.

1 cl, 4 dwg