Sublevel Stoping with Cemented Paste Backfill in Weak Rock Mass Zones
V. I. Golik1,2, O. Z. Gabaraev1, A. O. Kudrya3
1North Caucasus State Technological University, Vladikavkaz, Russia
2Moscow Polytechnic University, Moscow, Russia
3Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Mineral deposit, underground mining, stress, ore, rocks, backfill, rock mass, small thickness, perimeter blasting
Abstract
For structurally complex orebodies in weak zones of enclosing rock mass, a variant of the sublevel stoping technology with cemented paste backfill is proposed. On the ground of the in-situ data, the analytical relations are constructed to determine stability of artificial roof and sidewalls in stopes. It is found that backfill possessing the uniaxial compressive strength of 3 MPa preserves stability in the course of extraction of ore from adjacent stopes and in mining on the lower lying level. The recommendations on backfilling are given.
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