Abstract: For the goaf hazards existed after Dazhong iron ore Ⅱ# ore exploitation, goaf treatment plan of caving control combined with induced caving was proposed.Shock model was set up according to goaf caving blast shock principles and caving blast shock hazards were evaluated.Suggests were proposed for cushion thickness, delineation of surface caved area and setting of warning marker of goaf, solved the hazard of Dazhong iron ore goaf effectively.

Key words: Goaf, Caving, Cushion