柱状药包爆炸应力场及在地下中深孔爆破中的应用

针对球形集中药包理论指导中深孔爆破设计时与实际情况严重不符的现状,设计了2种实验模型,采用全息激光动光弹法进行了模型实验,研究了球形药包与柱状药包爆炸应力场、柱状药包在不同起爆位置时的爆炸应力场.将实验结果与现场实际情况相结合,通过对排距(最小抵抗线)、孔底距和炸药在孔内起爆位置进行的44排拟水平现场正交实验,确定了合...

Blast stress field of linear explosive charge and its application to medium-depth hole blasting in underground mine

Aimed at the fact that the theoretical guidance for the spherical concentrated charge blasting have a discrepancy with the actual status in the design of the medium-depth hole blasting,two types of experimental models were proposed.Model experiments were carried out by using holographic laser dynamic photo-elasticity to explore the explosion stress fields of globular charge,and which of linear charge detonated at different points.Nine orthogonal tests(forty-four rows) in site were conducted about row spacing(the minimum resistance line),hole face distance and detonation point in borehole to obtain suit blasting parameters by combining the experimental results and fine blasting effects were got.