The single-hole casting blast experiment was conducted in lab. The formation process of blastingcrater was observed and the casting velocity and its distribution rule was analyzed.
在实验室进行了单孔抛掷爆破试验，观测了台阶爆破漏斗形成过程，分析了抛掷速度及分布规律。
2
Based on the indoor model tests and field blastingcrater tests, the paper discussed the influence of single closed fissure upon fragmentation effect of blasting with single spherical charge.
Serial blastingcrater test method was used in underground medium and deep hole mining of Dahongshan copper mine for determining drilling and blasting parameters, and good results were obtained.