METHOD OF UNDERGROUND MINING OF PITCHING AND UNDERLAY LODES Russian patent published in 2014 - IPC E21C41/22 E21B43/28 

FIELD: mining.

SUBSTANCE: invention relates to mining and, in particular, to underground mining represented by pitching and underlay lodes. Mining of stopes during excavation of lodes is carried out in two stages. At the first stage the mined space is filled in moving the front of stoping by removing after ore breaking in each stope cycle from each ore embankment only part of a broken rock mass in the form of a strip adjacent directly to the stoping, the width of which is determined by the formula. Since when breaking of each layer in the mined space of stope a part of the ore embankment is left, after breaking the whole block the mined space is completely filled with the broken ore mass. At the second stage of mining the block the waterproofing of all mine roadway layout is carried out at its outer contour and using the methods of physicochemical geotechnology the useful components are removed from the ore, filling the mined space, and the ore recycled in such a manner is left as a backfilling.

EFFECT: invention enables to improve the efficiency of underground mining of pitching and underlay lodes, to reduce the amount of unproductive works on maintaining mined space, increasing with the increase in the depth of exploitation.

2 dwg