Gipronickel Institute Ltd

V. B. Vilchinskiy, Head of Mining Laboratory, e-mail: vbvil@niсkel.spb.ru
L. V. Savchikov, Senior Researcher of Mining Laboratory

SKGMI (GTU)

Kh. Kh. Kozhiev, Dean of Mining-Geological Faculty

MMC Norilsk Nickel PD

V. P. Marysyuk, Chief Engineer
Yu. N. Nagovitsyn, Head of Departmen

Results of pilot testing (PT) of units for mining by ore and host rock caving method using self-propelled equipment at Zapolyarny mine, as well as of a single-stall unit for excavation of the underworked disseminated ore’ solid masses accompanied by backfilling technique in the complicated geodynamic environment at Komsomolsky Mine are discussed. For mining of Zapolyarny mine’ South Zone oreshoot, a unit intended for mandatory level caving accompanied by one-stage excavation based on the selfpropelled equipment has been tested. Implementation of the mining units based on the self-propelled equipment have resulted in 1.5–2.0 times increase of labour efficiency and in 2–2.5 times enhancement of speed of the horizontal level working performance. PT of a single-stall unit for mining of the underworked disseminated ore’ solid masses by backfilling technique at Komsomolsky mine have been carried out according to two scenarios: mining by two sublevels and mining of the total body. It has been found out that increase in the extraction chamber length results in the daily capacity growth. Safe dimensions of a chamber have been determined.

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