摘要
采用流体动力学模型研究了地下空腔中化学爆炸冲击波的传播过程及空腔壁的运动状态。计算中体现了空气冲击波与空腔壁作用后激发的强谱振幅高频冲击波。在实验中 ,解决了空腔内传感器的防护和抗干扰等技术难题 ,测到了空腔壁的地运动加速度波形。通过对所测波形的时频域分析得出了非填实爆炸在源区和近区激发高频应力波 ,其频率明显高于填实爆炸的频率。这些特征与数值计算相一致。
Vibration behavior of the rock wall in chemical decoupling explosion was studied by using the model of hydro dynamics in this paper.High frequency with strong level induced by interacting shock wave to cavity wall was expressed in calculation.Stress waves with high frequency in near field in decoupling explosion were obtained from FFT to accelerations waveform measured in experiment,and the frequency of stress wave was high than that in coupling explosion obviously.The results in experiment were agreed with those in calculation.Finally,some problems that existed in calculating and measuring were discussed preliminarily.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2001年第3期237-240,共4页
Explosion and Shock Waves
