Research and Application of Resuing Stoping by Oriented Casting Blast with False Bottom of Steel Structure for Extremely Narrow Veins in Hebei Yuerya Gold Mine

High efficiency and integrated mining technology aimed at the major problems in Hebei Yuerya Gold Mine where the undergroumd mining conditions belong to extremely narrow veins, the mined out area is large, and the resource utilization low.

By this project, the problems of the waste rock transportation for filling and the roof joint in filling were solved; wall-sliced resuing for extremely narrow vien is developed, which singnicantly increased mining capacity, lowered down ore loss and dilution, and remarkably improved the economic results; the false bottom with steel structure is simple in technique and low in cost.

The research result of this project is the first home and aboard. It is at the leading level in China for the mining the extremely narrow viens of flat dipping.