中文摘要：

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2in×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4000-5000S-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。

英文摘要：

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-wa｜l exerts on bubble is analyzed from qualitative and quantitative perspective. Bubbles by small equivalent PETN are investigated by controlling the velocity of HSP in 4000～5 000 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.