METHOD FOR MINING OF OUTBURST-PRONE MINERAL BEDDED DEPOSITS Russian patent published in 1996 - IPC

FIELD: mining industry. SUBSTANCE: method for mining of outburst-prone mineral bedded deposits includes determination of potential outburst hazard of beds of worked deposit and bed extraction. In so doing, outburst-prone beds are preliminarily undermined and partially mined from their tops. Potential outburst hazard is determined by the depth of rock mass and average dependence of variation of outburst hazard in depth is established. Dependence is used to determine the range of depths with minimum and maximum potential outburst hazard of deposit. Undermining, mining from the top and mining of the whole beds is to be started from the range of depth of minimum outburst hazard in direction of range of depths of maximum outburst hazard. Mining of beds located in the depth range of maximum outburst hazard is effected after extraction of beds in the depth range of minimum outburst hazard which are occurring under and above the depth range of maximum outburst hazard. Ranges of depths of maximum and minimum outburst hazard are determined by the offered formulas. EFFECT: higher efficiency. 1 dwg