FIELD: mining.
SUBSTANCE: method involves development of upper part of the pit along temporary lines using dump trucks with stiff frames to the intermediate contour determined with conditions of efficient use of the latter, and further development of the pit using articulated dump trucks and steeply inclined haulage berms. Formation of boundary contours of the pit is performed based on its mining through complete design depth with steeply inclined haulage berms with movement of mined rock directly to external dumps and storage areas.
EFFECT: higher development efficiency due to reduced volumes of overburden operations at increase in complete extraction of deposits.
2 dwg
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