为研究水下爆炸气泡的动态特性,建立了实验室尺度水下爆炸气泡实验方法,该方法采用高速摄影技术,在2m×2m×2m的水箱中进行,分别从定性和定量的角度分析了水箱边界影响产生的的误差.研究了小当量PETN的水下爆炸气泡现象,高速摄影的速度控制在4000～5 000 s-1,精度控制在1％以内.实验结果表明:随着药量的增加,水箱边界的影响逐渐增加.在进行实验室尺度水下爆炸气泡实验时,为尽量减小边界对气泡运动产生的影响,需要控制使用的药量.%A laboratory-scale experiment method is founded to investigate underwater explosion bubble dynamics. High-speed photography(HSP) technique and a 2m ×2 m ×2 m tank are employed. The influence of tank-wall exerts on bubble is analyzed from qualitative and quantitative perspective. Bubbles by small equivalent PETN are investigated by controlling the velocity of HSP in 4 000 ~5 000 s -1 and the precision is within 1 % . Experimental results show that the effect on bubble motion increases with charge weight. Therefore, the weight of charge should be careful controlled in experiment.
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