Abstract:Based on the introduction of block theory and calculation program, Taking No. 92 orebody in Tongkengkuang for example, optimal anchor net support parameters of 1#, 2#, 3# and 4# test areas are quickly determined by fully using the General Block calculation program of the general block theory and the Unwedge calculation program of the key block theory. The research results can be used as reference for the anchor net support of complicated fractured rock mass in other underground engineering.