STUDY ON STRUCTURE PARAMETER OPTIMIZATION OF SUBLEVEL CAVING FOR HIGH-DIPPING MIDDLE THICKNESS ORE BODY

Through physical simulated tests and industrial field tests,this paper studies sublevel caving of the arrangement of mining entrance along the run of the ore vein and optimize the structure parameter in the stope.By enlarging the cross section of mining entrance before ore removal,the entrance of ore removal is enabled to be close to footwall arrangement,the scope of the flow of ore is made greater,footwall residual amount is reduced and the rate of withdrawal is raised.