深水静压下化学敏化乳化炸药爆炸能量的输出特性

Output Characteristics of Explosion Energy of Chemically Sensitized Emulsion Explosive under Static Pressure in Deep Water

为研究化学敏化乳化炸药能量输出受深水静压的影响,利用可调节深水压力大小的水下爆炸测试系统模拟深水静压环境,获得了亚硝酸钠质量分数分别为0.1%(Y-0.1%)、0.2%(Y-0.2%)、0.3%(Y-0.3%)、0.4%(Y-0.4%)的4种炸药在静水压力0、0.1、0.3、0.5 MPa下的能量变化情况。研究结果表明:在一定的静水压力变化范围内,压力相同的情况下,4种炸药能量输出性能从优到劣的顺序分别为Y-0.4%、Y-0.3%、Y-0.2%、Y-0.1%。当静水压力达到0.5 MPa后,4种炸药均发生不同程度的拒爆。这是因为,随着静水压力的不断增大,炸药中的化学敏化气泡逐渐变小或消失,大部分变为无效热点,不能形成灼热核,炸药发生拒爆。炸药拒爆时所测得的爆炸能量仅为雷管爆炸的能量。

In order to study the influence of deep-water static pressure on the output energy of chemically sensitized emulsion explosive,the underwater explosion test system with adjustable deep-water pressure was used to simulate the deep-water static pressure environment.Energy changes of four explosives with sodium nitrite mass fractions of 0.1%(Y-0.1%),0.2%(Y-0.2%),0.3%(Y-0.3%)and 0.4%(Y-0.4%)at pressure of 0,0.1,0.3 and 0.5 MPa were obtained.The results show that,within a certain range of hydrostatic pressure and under the same pressure,the order of energy output performance of the four explosives from good to bad is Y-0.4%,Y-0.3%,Y-0.2%and Y-0.1%,respectively.When the hydrostatic pressure reaches 0.5 MPa,the four explosives all reject detonation to different degrees.With the increasing hydrostatic pressure,the chemically sensitized bubbles in explosive gradually become smaller or disappear.Most of them become invalid hot spots,which could not form hot nuclei,and the explosive refuses to explode.When the explosive refuses to explode,the measured explosion energy is only from the detonator explosion.