METHOD FOR DEVELOPMENT OF GENTLY SLOPING FORMATIONS OF POTASSIUM SALTS BY COMBINE MACHINES Russian patent published in 2020 - IPC E21C41/20 

FIELD: mining.

SUBSTANCE: invention relates to mining industry and is intended for use in development of flattened formations of potassium salts by tunneling-cleaning combine-harvesting complexes. Extraction of potassium ore is carried out with chambers passing through the combine harvester complex. Pillar are left between chambers, and ore is separated from massif by excavating machine with further loading of rock into accumulating hopper. Accumulating hopper transports ore into self-propelled transportation machine, which delivers and unloads potassium ore into ore chute wells. In the developed chamber from the adjacent waste chamber at the distance equal to the ore delivery length, within the limits of which the continuous operation of the extraction machine is realized, through pillar pass breakdown, providing possibility of potassium ore delivery from accumulating bunker of second self-propelled transporting machine through cake and spent chamber to ore chute well.

EFFECT: raised productivity of mechanized shear complex by reduction of downtimes of excavating combines in anticipation of self-propelled transporting machines, provision of continuous operation of extraction combines.

1 cl, 1 dwg