Adoptting the blasting system with deck charge in blasthole and same-section hole-by-hole mil-lisecond ...

采用间隔装药孔内同段孔间微差侧向挤压崩矿方案，达到理想崩矿效果。

Suitable parameters of perimeter blasting were obtained with good results.In the final, the paper discussed the blasting mechanism of the frozen soil and the blastin...

通过试验较好效果下周边适宜参数,并对冻机理和对冻结管影响问题进行探讨。