FIELD: mining, particularly open cast mining.
SUBSTANCE: method involves excavating large coarse mineral blocks by cutting slots with load-cutters; transporting mineral blocks to loadout level. Breakage face is advanced along strike. Mineral blocks are excavated in down-top direction to the rise by block sliding on trays along face ground to lower horizon with block movement by means of winches to loading area. Blocks laid on trays are loaded so that the trays are retained with rope and case mountings or without it if not required with the use of high-capacity truck-mounted crane. To develop seams having thickness exceeding maximal cutting depth of load-cutter mineral is cut in top-down direction with following cutting of layers each having thickness of not more than 2.2 m. Lower horizon provided with rail track is located at seam floor. The rail track is erected on lower horizon. Here blocks are loaded into cars. Cut mineral blocks are independently lowered from breakage faces at each layer to lower load horizon along movable mechanized metal structures provided with smooth metal descend having rounded ends, hoisting winch and bypassing block installed on vertical post. Vertical post height provides free snake line movement for cut mineral block movement. Blocks are separately loaded in cars from each layer.
EFFECT: increased output, improved operational and environmental safety and economical efficiency.
4 cl, 7 dwg
