油相对乳化炸药耐低温性能的影响研究

在试验的基础上，探讨了不偶合装药爆破效果与不偶合系数之间的关系。试验中发现，当不偶合系数为2．0时，平均块度与偶合装药时几乎完全相同，面粉矿率及大块率则较小。当不偶合系数大于等于2．0时，随着不偶合系数的增大，粉矿率减小，大块率上升．应变波的测试结果表明，随着不偶合系数的减小，应变波幅值逐渐增大．通过裂缝扩展试验，发现裂缝扩展速度随着不偶合系数的增大逐渐减小．以上表明，爆破效果最终由应力波和爆生气体两者的共同作用决定．

DEMOLITION OF A HUGE GROUP OF INTERCONNECT SILOS BY CONTROLLED BLASTING

In this paper, the design, execution and results of a controlled blasting for demolition of a huge group of interconnect silos are introduced. Because of complicated environment, the blasting vibration, collapsing impact and the flying rocks must be strictly controlled. Based on comprehensive analysis on all of effective factors during design, it was determined that the group would be divided into two parts and then blasted. A second delay detonating network which included non electric ignition system and electric detonators was adopted. The desired blasting results were achieved and some experience could been provided for similar projects in the future.