Based on large section of cut eye, bad surrounding rock environment and support system in 12230 working face of Changcun Mine, through the analysis, based on the geological condition of the working face, anchor wire rope + W steel belt + 36 U semicircle tunnel, hydraulic lift shed supporting composite supporting system was adopted, the technology turned passive support to active support, effectively controlled the deformation of the cut, saved a large amount of material and achieved  the purpose of savings and consumption reducing.