大口径未爆弹销毁安全距离研究

Study on Destruction Safety Distance of Large-diameter Unexploded Ordnance

为保证大口径未爆弹销毁作业中人员的安全,从理论上研究了未爆弹销毁安全距离。根据破片的理论初速、破片杀伤判据、杀伤破片的飞散距离,得到防破片安全距离的计算公式;根据冲击波理论,得到防冲击波安全距离的计算公式;根据防破片安全距离和防冲击波安全距离,从理论上确定未爆弹销毁时的警戒安全距离和防护掩体设置距离。以某大口径未爆弹为例进行实例分析,确定了其相应的警戒安全距离和防护掩体设置距离。研究结果表明:该未爆弹销毁时警戒安全距离主要考虑破片,与GJB5120—2002的结果进行比较,认为GJB5120—2002的结果过于保守。

For assuring personnel security during the destruction of large-diameter unexploded ordnance（UXO）,the destruction safety distance of UXO is studied in theory.The calculation formula for the safety distance of defending fragment was obtained based on theoretical muzzle velocity of fragment,fragment wounding criteria and dispersing distance of wounding fragment.Meanwhile,the calculation formula for the safety distance of defending shock wave was also obtained based on shock wave theory.Then,the warning safety distance and the setting distance of protective shelter during destruction of UXO were decided based on the safety distance of defending fragment and the safety distance of shock wave.Finally,an application example was given and the corresponding warning safety distance and the setting distance of protective shelter were decided.The results show that the determination of the warning safety distance during destruction of the UXO mainly considers fragment.Compared with the result of GJB5120—2002,the result of GJB5120—2002 is considered excessively conservative.