Application Investigation of Geotechnology in Underground Mining of High-Value Quarts in Kyshtym Mine
I. V. SOKOLOV, A. A. SMIRNOV, YU. G. ANTIPIN, K. V. BARANOVSKY, I. V. NIKITIN, A. A. ROZHKOV
Institute of Mining, Ural Branch, Russian Academy of Sciences, ul. Mamina-Sibiryaka 58, Yekaterinburg, 620075 Russia
Keywords: месторождение кварца, подземная геотехнология, комбинированная система разработки, потери и разубоживание, буровзрывные работы, quartz deposit, geotechnology, hybrid mining, loss and dilution, driling and blasting
Abstract
Application of geotechnology used in high-value quarts mining in Kyshtym Mine is studied. The room-and-pillar method is trialed, and the actual mining performance is evaluated. The potential benefits of the geotechnology are evaluated. The air-decoupled charges without inert filler are designed and tested for fan pattern blasting. Size distribution of broken ore is estimated, and optimal parameters of blasting and powder factor are determined. The feasibility of quartz loss reduction to 3 times owing to extraction of useful mineral from pillars and due to decreased yield of overground quartz by 25-40% is proved.
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