用孔底起爆技术改善爆破效果

Optimizing blasting effect of Jin Shan Dian Mine in blasting Scheme of hole-bottom

本文对孔底起爆的机理进行了分析和计算，并进行了１５次孔底起爆现场试验，爆破效果良好，大大降低了爆玻成本．

The article analyses the mechanism of first blasting in hole-bottom.About 15 times of this blasting experiments in Jin Shan Dian entrances demonstrate that the blasting 6f feet is excellect, blasting cost is greatly redused.