Research on dynamic control technology for slight dilution and loss in moderately inclined medium-thick ore bodies
The moderately inclined medium-thick ore bodies have unique occurrence conditions,with fairly high stope ceiling heights,difficult roof management,large amounts of preliminary mining work,and significant mining chal-lenges.Common issues include high mining loss rates and high ore dilution rates.To address the problems in the stope of Vein 32-2 of the Huluntu mining area at Xinda Gold Mining Company,such as the difficulty in recovering the peach-shaped ore pillars and unsatisfactory dilution and loss indicators,a dynamic control technology for slight dilution and loss in moderately inclined medium-thick ore bodies was developed.This technology systematically utilizes all-around borehole inclinometry,reversely deduces the 3D spatial model of the designed boreholes versus actual bore-holes,and studies the borehole deviation patterns.It significantly reduces the ore dilution rate.During the recovery process,the peach-shaped ore pillars between two drilling drifts are mined using a mining method with a combination of different hole lengths,effectively reducing the mining loss rate.This approach significantly enhances resource utiliza-tion and the technical and economic indicators,providing a new technical pathway for the safe and efficient mining of similar mines.
moderately inclined medium-thick ore bodyall-around boreholeborehole inclinometrymining with a combination of different hole lengthsdynamic control of slight dilution and lossmining loss rate
NETL
NSTL
万方数据
