有底柱分段崩落法分单元落矿试验与生产

Unit test and production using sublevelcaving method with floor

根据河西堡铁矿地质条件变化大、探矿费用高、采准工程准确性差、回采贫损指标高的特点，有针对性地改进原有底柱分段崩落法的落矿工艺，采用分单元落矿，取得了较好的效果。

In view of large variation of geological condition of Hexibao iron mine, the high expense of ore prospecting, the poor accuracy of development engineering, and the high index of stoping dilution, the original caving process of sublevel caving method with floor was improved accordingly, and good results were obtained.