Abstract
The use of backfill in underground mining is increased due to a need for systematic backfilling the mine openings and workings. Backfilling is applied in order to prevent fires and explosions, improve the mine ventilation, improve the rock stability, reduce the subsidence effects on surface, as well as for economical and environmental factors. Sources of materials are usually from mining industry (e.g. fly ash, gypsum, slag, infertile overburden, tailings, filter dust, residues from mineral processing) or other industries. The ore body Bor River of the Bor Copper Mines is planned to be exploited by the sublevel stopping method. In order to ensure greater efficiency in the exploitation of the ore body, it is proposed, after the excavation of chambers, to move on to the excavation of the main pillars. To ensure the stability of the excavation area, it is necessary to fill the excavated chambers with material of good physical and mechanical properties. For this purpose, a possibility of filling the chambers with backfilling consisted of flotation tailings, small amount of cement and water, will be tested. This paper reviews the basic requirements of backfilling that will be applied in the excavated chambers.
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