串联聚能战斗部爆破不同目标产生地震波的研究

Experimental study on seismic wave generated from tandem shaped charge warhead blasting different targets

从地震波形成过程与机理出发,研究其作用在大块孤石和岩壁两种目标所形成的地震波传播规律。通过对不同测点的震动进行监测,由对震动速度时程曲线分析可知,串联聚能战斗部的爆破震动主要由前级装药爆炸引起,震动强度衰减规律可用萨道夫斯基公式预测。对两种目标进行爆破试验可得:爆破作用目标不同,用于产生地震波的爆炸能也不同,作用目标为岩壁时,产生的地震波能量比作用目标为大块孤石时多;震动持续时间与爆心距的关系式也不同;从频率的角度分析,爆破岩壁比爆破大块孤石所产生的地震波对建构筑物的危害更大。

To study the blasting and vibrating effect of the tandem shaped charge warhead blasting large boulders solitary and rock wall,the formation process and mechanism of blasting seismic wave were studied and the time history curve of vibration velocity of the monitoring points was obtained by vibration tester. With differential and FFT analysis on the curve,it is concluded that the blasting vibration of tandem shaped charge warhead is mainly caused by the former stage charge. The attenuation law of vibration velocity with distance can be predicted by Sadove's Formula. As for different target,the explosive energy for seismic waves is different. The explosive energy for blasting rock wall is higher than blasting large boulders solitary. The vibration duration can be expressed with different relation formula. Considering the vibration frequency,the seismic waves generated from blasting rock wall is more harmful to the buildings.