中国矿山工程

Natural caving mining method as a low-cost and large-scale mining method, ore rock in the self-weight stress and structural stress under the action of natural caving, and through the output level of the polyore trough release, ore continuous transportation, the surface gradually collapsed to form an open pit, with the continuation of mining activities, the surface collapse pit will become larger and larger, when the rainfall increases, the surface rock in the collapse pit is broken for the formation of debris flow to provide a rich source of solid matter, continuous release impact for debris flow to provide channels and inducing factors, Continuous release is easy to cause underground debris flows. Taking the copper mine as the engineering background, through the occurrence of underground debris flow since 2019, the main factors controlling underground debris flow are determined from the analysis of the source conditions, topography and geomorphology and inducing factors that trigger the underground debris flow, and the research results show that the occurrence of underground debris flow is inseparable from the three elements of material source conditions, topography and geomorphology, and inducing factors, and the treatment of underground debris flow requires changing the surface collapse pit, controlling water sources and material source collection, and controlling ore release for comprehensive treatment.