METHOD FOR UNDERGROUND DEVELOPMENT OF ORE DEPOSITS

摘要

FIELD: mining industry. SUBSTANCE: according to method, development is carried out by chambers layer by layer from bottom upwards with blast winning of ore and with continuous enlarging pillars of ore over entire height of block. Pillars are covered with isolating material. Working of pillars is performed by periodic blasting of their base from specially driven entries with delivery of broken ore mass to ore chutes. Space created after working-out of ore pillars are packed with filler. EFFECT: higher efficiency. 4 dwg