爆破振动高程效应对比试验研究

Comparative Experimental Study on the Elevation Effect of Blasting Vibration

为了研究爆破振动高程放大效应的规律,有效地控制爆破振动,采用电子雷管和导爆管雷管进行现场对比试验,并利用MATLAB对监测数据进行线性回归分析,得出受高程影响情况下的爆破振动速度预测公式。结果表明:采用电子雷管起爆的爆破振动主频率高于采用导爆管雷管且高于10Hz,更有利于保护边坡;爆破振动高程放大效应具有方向性,在垂直方向更明显。利用预测公式对振动速度进行控制,可有效保护被保护对象。

In order to study the law of elevation amplification effect of blasting vibration and effectively control the blasting vi- bration, the electronic detonator and the non--electric detonator were used for field contrast experiments. The linear regression analysis was applied to the monitoring data by MATLAB software. And the prediction formula of blasting vibration velocity un-der the effect of elevation was obtained. The results showed that the main frequency of blasting vibration detonated by electronic detonator was higher than that by non-electric detonator and was over 10 Hz, which was more conducive to protect the slope. The elevation amplification effect of blasting vibration, with the directional characteristics, was more obvious in the vertical di- rection. And using the prediction formula to control the vibration velocity could effectively protect the objects near the blasting.