摘要
为了研究乳化炸药水下爆炸载荷输出特性,开展了乳化炸药水下爆炸实验,通过改变药量、爆距、爆深等参数,得到了不同工况下乳化炸药水下爆炸冲击波和气泡载荷典型参数,分析了其能量输出结构,并将实验结果与TNT炸药水下爆炸载荷计算公式进行对比,获得了乳化炸药水下爆炸载荷的TNT当量。结果表明:Geers-Hunter载荷公式可以预测乳化炸药水下爆炸载荷输出的一般规律,特别是气泡脉动周期;气泡脉动压力峰值是初始冲击波压力峰值的10%~20%,气泡能是冲击波能的2倍左右;脉动压力变化呈现先缓慢上升达到峰值后急速下降趋于零并保持平稳的态势,波形上升沿耗时普遍比下降沿耗时长;乳化炸药水下爆炸在等冲击波超压和等气泡脉动周期下的TNT当量平均值分别约为0.595和0.646。研究结果可为乳化炸药的水下爆炸应用提供重要参考。
In order to study the load characteristics of underwater explosion for an emulsion explosive,underwater explosion experiments of the emulsion explosive were carried out.By changing critical parameters such as explosive charge mass,explosion distance and depth,the typical parameters of underwater explosion shock waves and bubble loads were obtained for different cases.The energy output was analyzed and compared with TNT for the calculation formula of underwater explosion loads,then the TNT equivalence for underwater explosion of the emulsion explosive was attained.The results show that Geers-Hunter formula can predict the general law of load output of underwater explosion for the emulsion explosive,especially with regard to the bubble pulsation period.The bubble oscillation pressure accounts for 10%–20%of the initial shock wave peak pressure,and the bubble energy is about twice the shock wave energy.The oscillation pressure waveform exhibits a trend of slowly rising to the peak,then rapidly falling to zero and keeping a steady state,thus the rising edge of the waveform generally takes longer time than the falling edge.The average TNT equivalence of the emulsion explosive in underwater explosion is about 0.595 as to the same shock wave overpressure,and about 0.646 as to the same bubble pulsation period.This research results can provide important reference for the application of emulsion explosives in underwater explosion.
作者
郑欣颖
李海涛
张弛
吕岩松
ZHENG Xinying;LI Haitao;ZHANG Chi;LYU Yansong(College of Naval Architecture and Ocean Engineering,Naval University of Engineering,Wuhan 430033,Hubei,China)
出处
《高压物理学报》
CAS
CSCD
北大核心
2022年第4期182-190,共9页
Chinese Journal of High Pressure Physics
基金
国家自然科学基金(51679244)。
关键词
乳化炸药
水下爆炸
TNT当量
冲击波
气泡脉动
emulsion explosive
underwater explosion
TNT equivalence
shock wave
bubble oscillation
