Abstract: Underground debris flow is a common disaster, and block caving influences greatly on miningsafety and ore dilution. This paper made a literature review of formation mechanism and control measuresof the underground debris flow in Pulang copper mine, and analyzed the characteristics of debris flowsource, terrain conditions, hydrodynamic conditions, channels and some other factors, and put forwardthe suggestions for the control and prevention of debris flow and safe mining production.

Key words: underground debris flow: thickness of quaternary sediments, surface water and ground water, proportion of ore output, formation mechanism, control measures