Three miles away there was a salvo of blasting in the quarry.
三英里之外的采石场进行了爆破作业。
2
According to the mechanism of base air-decked blasting, combined with millisecond blasting theory, the contrast tests of millisecond blasting for base air-decked were carried out in the quarry.
根据孔底空腔爆破的作用机理，结合微差爆破理论，在该采石场进行了孔底空腔微差爆破的对比试验研究。
3
Taking practical activities as examples, the blasting parameters, exclusive-pot expansion process and execution safety of explosive-pot technology used for blasting work in quarry are explained.