PROCESS OF BOREHOLE HYDRAULICKING OF MINERALS AND AGGREGATE FOR ITS IMPLEMENTATION

摘要

FIELD: mining industry. SUBSTANCE: process of borehole hydraulicking of minerals is intended for exploitation of deposits by long posts with formation of interpost pillars. Production seam is opened by production and auxiliary holes. At least one production hole of bigger diameter is drilled in each post into section of production seam with least absolute height mark of its ground. Holes are charged with explosives and their short-delay blasting is performed in direction from production hole to periphery of post. Production seam broken by cracks after blasting is washed from auxiliary holes with feed of pulp to inlet of pulp-lifting column of production hole where additional crushing is performed. For implementation of process there is used giant composed of external pulp-lifting column, water-feeding column mounted for rotation inside it with face rock-crushing tool and fixture for crushing and feeding of mineral to pulp-lifting column. Mentioned fixture is manufactured in the form of conveyer embraced by housing of screw conveyer put on water-feeding column above face rock-crushing tool which diameter and coiling pitch diminish towards inlet of pulp-lifting column. EFFECT: enhanced efficiency of process and aggregate. 2 cl, 4 dwgd