低速撞击不同温度下炸药药柱的响应特性

Reaction Characteristic of Explosive Columns on Different Temperatures in Low Speed Impacting Multiple Test

为研究炸药药柱在低速撞击复合刺激下的安全性,建立了炸药药柱低速撞击复合环境试验系统,对-40、20、70℃的B炸药与JO8炸药柱进行了低速撞击感度试验。采用气敏检测系统监测药柱撞击密闭腔室内CO、CO2以及H23种气体的浓度来判断药柱的爆炸状况,提高了试验结果判断的准确性,获得了不同温度下B炸药与JO8炸药柱的临界落高。结果表明,温度与炸药药柱临界撞击高度并没有很直接的关系,B炸药与JO8炸药的药柱撞击安全性在一定温度范围内（20~70℃）对温度不敏感,低温环境下B炸药稍有钝感,而JO8炸药则趋于更加敏感。

In order to study the safety of explosive columns under low speed impacting multiple stimulations,the multiple environments test system was established and the low-impact sensitivity tests of Composite B and JO8 were carried out under the temperature of- 40 ℃,20 ℃ and 70 ℃. The density of CO,CO2 and H2in the impacting hermetic room were monitored by the gas-sensitive detection system to determine the status of the columns explosion,which improves the accuracy of the judgment of explosion. The critical drop height of Composite B and JO8 under three different temperatures was obtained. The results show that the critical drop height has no very direct relationship with temperature. The impacting safety of Composite B and JO8 is not sensitive to temperature in a certain temperature range from 20 ℃ to 70 ℃. Under an environment with lower temperature,the Composite B is slightly insensitive and JO8 tends to be more sensitive.