UNDERGROUND MINING OF KIMBERLITE UNDER OVERBURDEN

Abstract

Mining of kimberlite diamond-containing ores in Yakutia has been considered. Deposits of kimberlite ores are under permafrost overburden which is very thick. Opencast mining of the ores is economically non-advisable. In connection with this, scheme of underground mining of the ores has been considered. New technologies for mining of the ores have been developed. It has been shown that filling is not required in case of application of new technology. Utilization of vibration discharge of the ores is provided. High productivity is observed in this case. Efficient systems of breaking the ore have been recommended.