岩石爆破能量分析的数值方法

本文通过球形装药与岩石爆炸作用的力学分析,给出确定爆炸能量利用率的数值方法。通过算例,对于以破碎为主要目的的岩石工程爆破,爆炸能量利用率约为50%,爆炸作用初期的爆炸能量传递率约为40%。对于算例涉及到的炸药和岩石,两者的波阻抗越接近,爆炸能量利用率就越高。

Numerical Technique in Energy Analysis of Rock Blasting

Numerical technique of determining utilization coefficeint of explosion energy is given through mechanical analysis on explosion of the spherical charge in rocks. The computing examples showed that the utilization coefficeint of energy is about 50% in the blasting mainly for rupturing rocks, and the energy transmission ratio is about 40%. In addition, the closer wave impedances of both rock and explosive, the higher the utilization coefficeint of energy.