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Study on Mining Technology of Inclined Extremely Thin Vein

XIA Jianbo,LIN You   

  1. Faculty of Metallurgy and Mining Engineering,Kunming Metallurgy College,Kunming 650033,China
  • Received:2019-01-09 Online:2019-10-31 Published:2019-10-31

Abstract: Inview of the problems existing in the original pseudo-inclined working face separately comprehensive mining method in Guihua Copper Mine,the block mining is adjusted to continuous mining.By changing the pseudo-inclined direction of the working face,adjusting the mining sequence of the underground and falling ore,optimizing the layout of the blasting hole to change the blasting direction and other measures,the artificial labor intensity of the stope is greatly reduced,and the waste stone discharging time is reduced.Mining efficiency has been greatly improved,mining direct costs have beeng reatly reduced,mining losses and dilution rates have also been reduced accordingly.The improved scheme has been put into practice in Guihua Copper Mine.The miningcutting ratio of 1000 tons has been reduced by 23.86m/kt,the comprehensive recovery has been increased by 9.3%,the mining efficiency has been increased by4.16t/shift,the production capacity has been increased by 52t/d,and the direct cost of mining has been reduced by27.6yuan/t.The improved scheme has higher practical value and economic benefits.

Key words: inclined extremely thin vein, mining scheme, separately comprehensive mining, pseudo-inclined working face

CLC Number: