中深孔采矿方法优化在望儿山分矿深部中段的应用

Application of optimized medium-length hole method in the deep mining of Wangershan branch

针对望儿山分矿深部矿体的赋存条件及进路采矿生产效率低的特点和中深孔分层崩落在矿区的试验成果,采用了中深孔高效采矿方法。但进入2016年,随着生产的进行,按照既定采准方式矿房形成时间短,无法快速提供矿量。通过对深部中段进行采矿方法优化,保证望儿山分矿全年指标的完成,得出降低两率指标的方法,充分发挥中深孔采矿的高效性。

In view of the occurrence condition of deep orebody and low production efficiency of drift stoping, and the experimental results of slicing and caving with medium-length hole in Wangershan branch, the high efficiency medium-length hole method was used. But from 2016 with the production went on it can not form room and provide enough ore rapidly by using this method. Through optimizing the deep mining method, the yearly target was finished and the method of reducing ore dilution and loss rate was got, which gave full play to the medium-length hole mining in efficiency.