ABSTRACT
For the large iron mines buried more than 1500 meters deep, the sublevel caving method is the most economical and reasonable, but the caving mining will cause the surface subsidence, brings a series of environmental problems. According to the char-acteristics of deep buried ore, put forward a kind of caving mining, cut shallow protective layer and monitoring collapse area, utilization of tailings and waste rock filling protective layer and protect the environment from damage. Both the use of caving method has the advantages of high strength, small mining cross engineering quantity and avoided the caving method of surface subsidence, at the same time, shallow filling not only uses the waste rock and tailings, but also simplifies the filling process, short-en the filling distance, reduce the cost of filling.
