METHOD OF UNDERGROUND DEVELOPMENT OF CONTIGUOUS STEEPLY DIPPING ORE BODIES Russian patent published in 2013 - IPC E21C41/22 F42D3/04 

FIELD: mining.

SUBSTANCE: rock blasting is performed at three stages: the first stage involves drilling of rock interlayers as per a pattern providing specific explosive flow determined as per a formula. The second stage involves testing of all the drilled wells, and position of outlines of ore bodies is specified as per its results, which are drilled by means of wells as per the pattern providing increased specific explosive flow determined as per the formula. The third stage involves charging of all the drilled wells, performance of breaking-out in bulk, release and delivery of broken rock mass with its further separation as to fineness into ore and rock parts.

EFFECT: increasing production capacity of the ore blasting and completeness of extraction of balance reserves at development of contiguous steeply dipping ore bodies.

3 dwg