FIELD: mining.
SUBSTANCE: mined area is broken into stopes, blasting of each stope is carried out into three stages. At the first stage the entire volume of the stope is drilled with wells providing for coarse crushing of a massif, then contours of ore sections are determined by trying these wells. At the second stage within the borders of the detected ore sections they drill wells providing for fine crushing of an ore massif. At the third stage they charge all wells of coarse crushing, as well as wells of fine crushing, arranged within contours of ore sections, and bulk breaking of rock mass released from the stope is performed, and the rock mass is divided into larger rock part and finer ore part.
EFFECT: improved quantitative and qualitative parameters of mining of complex-structure deposits with uneven distribution of mineralisation.
3 dwg
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