Experiment of Safe and High-efficient Mining Method for No.2 Orebody in Huangshilao Area

No.2 orebody was initially mined with sublevel caving method in Huangshilao area.Due to fragmentized rock,excessive interlayer and diversified orebody,a series of difficulties occur during the process of mining,such as hard digging in laneway,hole deformation and difficult charging etc.In addition,sublevels are many,the engineering of mining preparation is large,support work is difficult,above problems restrict the production capacity of mine.Based on above difficulties,the stope structure parameter of No.2 orebody in Huangshilao area,as well as preliminary mining project disposal,excavate equipment,hole disposal etc.,are tested,mining project adapting to No.2 orebody is formed to ensure the producing continuity and stability of the mine.