以粒状铵油炸药为基体的示踪安检影响因素

Study on the Influence Factors of Tracer Security Inspection of Granular ANFO Explosive Matrix

为研究爆炸物示踪安检技术,以各类工业炸药为基体,均匀混合微量示踪剂,采用能谱检测方法,通过探测示踪元素的特征X射线,对示踪剂质量分数、炸药质量、介质材料和探测距离等影响因素进行了系列试验研究。以粒状铵油炸药为基体的试验结果表明,示踪剂质量分数由0.01%增至0.1%,50g粒状铵油炸药在空气中的探测距离由40mm增至180mm;示踪剂质量分数0.05%,粒状铵油炸药质量由10g增至100g,在空气中的最大探测距离由40mm增至180mm,50g粒状铵油炸药分别在空气、布料、纸张、木板和泡沫等介质材料中的最大探测距离为120、80、35、70、90mm,分别用厚度0.4、0.6和6mm的铜、铁、铝作介质材料,最大探测距离分别为40、1和10mm;探测距离为0时,示踪剂质量分数0.05%、质量大于4g的粒状铵油炸药可被准确探测到。可见,通过探测示踪元素特征X射线对爆炸物进行安检,不仅技术上可行,而且达到了较高的精度。数据表明,最大探测距离分别与示踪剂质量分数和炸药质量呈线性增长关系,与介质材料的密度呈负相关性。

In order to study the tracer security inspection technology of explosives,trace tracers were uniformly mixed with various industrial explosives as the matrix,and the energy spectrum detection method was used to detect the characteristic X-ray of tracer elements and a series of experiments were carried out on the influencing factors such as tracer content,explosive mass,medium material and detection distance.The test results based on granular ANFO explosive show that while the tracer content increases from 0.01%to 0.1%,the detection distance of 50g ANFO explosive in air increases from 40mm to 180mm.In addition,with the tracer content of 0.05%,the maximum detection distance in air increases from 40mm to 180mm when the mass of ANFO explosive increases from 10g to 100g.Herein,the maximum detection distances of 50g granular ANFO explosives in air,cloth,paper,wood and foam media are 120,80,35,70,90mm respectively.However,when copper,iron and aluminum with thickness of 0.4mm,0.6mm and 6mm are used as medium materials,the maximum detection distances are 40mm,1mm and 10mm respectively.When the detection distance is 0,the ANFO with tracer content of 0.05%and mass of more than 4g can be detected accurately.Therefore,it is not only technically feasible but also highly accurate to detect the characteristic X-ray of tracer elements for the security inspection of explosives.The results show that the maximum detection distance increases linearly with the tracer content and explosive mass,and is negatively related with the density of the medium material.