冲击波作用后乳化炸药贮存性能及影响因素实验研究

Experimental Study on the Storage Properties and Its Influence Factors of the Emulsion Explosive after Pressed by Shockwave

为了考察乳化炸药受冲击波作用之后的贮存性能,测试了乳化炸药在水中受冲击波作用之后一段时间的爆炸冲击波,以波峰值为参照量比较评判贮存性能的优劣。结果表明,乳化炸药在受到外界冲击波作用之后一段时间内其爆炸冲击波峰值不会有明显变化,但过了这段时间后爆炸性能会很快恶化并失去雷管感度。维持雷管感度的这段时间可能是几分钟、几天甚至几周,该时间段与所受冲击波作用强度、乳化剂、敏化剂等因素有关。具体地讲,所受冲击波强度越大该时间越短;乳化剂含量增加,该时间增加;在峰压108 MPa的冲击波作用下,随着空心玻璃微球含量由2%增至5%,雷管感度维持时间由大于18 h降至小于1 h,膨胀珍珠岩含量由2%增至5%时,雷管感度维持时间由24 m in降至几分钟。

To explore the storage properties of the emulsion explosive after pressed by shockwave ,the explosion shock wave of the emulsion explosive was tested at a period after it was pressed by shockwave in water,and the storage properties were compared and judged with its explosion shockwave crest values. The results show that there is no obvious decline of the explosion shockwave crest values in a certain period after pressed by the outside shockwavc,but the explosive capacity will be worsen quickly after this period and lose the priming sensitivity by cap. The period of keeping the cap sensitivity may be several minutes,some days or even several weeks,which is related to the intensity of the pressing shockwave,the emulsifying agent,the sensitizer etc. The relationship is that the period will be shorter with the increasing of the shockwave intensity, and it will increase with the increasing of emulsifying agent content, and when the emulsion explosive is pressed by the shoekwave with 108 MPa peak pressure, the period of keeping cap sensitivity declines from over 18 h to less 1 h with the increasing in the mass percent of the hollow glass mlcrobaUoon from 2% to 5% ,and with the increasing of the mass percent of the expanded perlite from 2% to 5% ,the period declines from 24 min to several minutes.