Mining method optimization of pillar in shrinkage method

In order to solve the problem of the treatment of the mined out area and the recycling problem of the pillar,to ensure the safety of the follow-up production and the recycle condition of the pillar,this paper based on the occurrence conditions of the PanLong lead-zinc mine goafs and pillar,filling method for treatment of mined out area was been selected,the treatment method of closed space is used only in the small goafs.At the same time,the analysis of three kinds of different pillar extraction methods shows the final selection of the horizontal slicing and filling mining method is the ultimate choice.