Abstract: During the crossing of F7 fault in 15032 working face of Xinjing Coal Mine，there are technical problems such as large amount of rock breaking and high failure rate of shearer，large amount of residual coal in goaf and broken surrounding rock during crossing fault. The mining scheme of crossing fault is analyzed，and the mining technology of deep hole pre-splitting blasting is put forward，and the combined support of ′grouting reinforcement + JW anchor cable shed′ is adopted for the roof during the working face crossing fault. The application results show that the deep hole pre-splitting blasting method can realize the presplitting effect of fault rock mass in advance，reduce the difficulty of rock breaking of shearer，and reduce the failure rate of shearer from 17% to 4%. After the combined support technology is adopted in the fault zone，the deformation and fragmentation of the surrounding rock are controlled. The end face distance of the roof is reduced to 0.4 m，and the depth of the coal wall is reduced to 0.7 m，which ensures the safe mining of the working face.

Key words: comprehensive working face, fault, deep hole presplit blasting, combined support