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试验研究了自然冒落与爆破崩落相结合的大结构参数无底柱分段崩落法,提出了基于散体流动特性的采场结构参数确定方法,并给出分段高度与进路间距的关系式和依据出矿口最早出露废石的信息确定崩矿步距的方法。这一新型采矿方法在北洺河铁矿取得了良好的实用效果。
A large-scale pillarless caving method with large structural parameters combining natural caving and blasting caving has been studied experimentally. A method to determine the structural parameters of stope based on the characteristics of bulk flow is proposed. The relationship between the sectioning height and the distance And based on the first mine out of the mouth of the exposed rock information to determine the method of collapse step. This new mining method has achieved good practical results in the Beibeihe Iron Mine.