Abstract: Abstract: South wing of Gu Bei coal mine (11-2) through the seam to return airway abnormalities F104 fault Zone Roadway engineering background, introduce the development of rock fractures in the fault zone, the local water rich, the deformation of rock deformation and the characteristics of the high degree of mud, on the foundation of the pre reinforcement and excavation of the effective support, the full use of the surrounding rock and the capacity of the surrounding rock, using comprehensive research method of theoretical analysis, numerical simulation and field test, system research Tunnel safe driving and reinforcement technology of Gu Bei coal mine in the F104 abnormal tectonic fault zone, results show that no cracks and separation phenomenon of new the surrounding rock after grouting fractured surrounding rock filling，passed Fault Zone smoothly, made a successful industrial test.