Abstract: With the increase of mining depth, the workings deformation, floor heave and rib spalling will become serious and rational support modes should be adopted to satisfy a safe and efficient deep mining. Different support modes are taken at different sites for different wall rocks at Beiminghe Iron mine. The numerical simulation of the support values of 2# vein-crossing drift at -230 m level that passes through diorite, skarn and iron orebody, and the comparison of the displacement and the maximum stress before and after the support show That the bolting and shotcreting support has played a good role in stabilizing the wall rock.

Key words: Floor heave, Rib spalling, Numerical simulation, Bolting and shotcreting support