FIELD: mining.
SUBSTANCE: method includes tapping of open pit reservoirs, simultaneous performance of open works and underground mining works, open pit push-back down tot limit depth, transportation of rock mass along transport benches and underground transport mines. At the same time sealed cushion is developed at the bottom of open pit, and pit is filled with overburden, afterwards barrier hydraulic insulation artificial pillar is crated, as well as two strengthening artificial pillars. Besides incline is arranged in the centre of orebody to move self-propelled equipment and transportation of cargo. Moreover, ore chutes pass within the limits of each strengthening artificial pillars, having linkages to inclination.
EFFECT: complete extraction of mineral in underground development of kimberlite deposit.
3 dwg
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