精确延时爆破振动速度峰值预测模型

Peak vibration velocity prediction model of precision delay blasting

根据几何地震学的基本原理,以单孔爆破振动速度峰值为基础,按照毫秒延时时间间隔建立精确延时逐孔起爆振动峰值预测模型。不仅可以预测爆破振动速度峰值,而且能够直观地展现爆破区域范围内振动峰值的变化情况,并能从保护区域内振动峰值出发,设定合理的毫秒延时间隔时间。根据现场应用数码电子雷管的深孔爆破实验,该方法计算的预测振动峰值与实测振动峰值吻合良好,计算结果可靠性较好,可以在实际工程中推广使用。

According to the basic principle of geometric seismology,with single hole blasting peak vibration velocity as basis and in accordance with the millisecond delay interval,the peak vibration velocity model of precision delay blasing with hole by hole was established.The results showed that the developed method could be used to predict the blasting vibration velocity peaks,it also could intuitively show the variation of blasting peak vibration velocity in the region and reasonable millisecond delay interval was set from the peak in protection region.The calculated velocity was coincident with the recorded ones in the deep hole blasting tests using electronic detonators.It indicated that the developed predication method was reliable for engineering applications.