Damage Effects of Explosion of RDX-Based Aluminized Explosives in Concrete
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摘要: 为了研究含铝炸药在混凝土介质中的毁伤效果，对不同含铝量的3种炸药进行了70 g药量小尺寸混凝土爆炸实验，重点研究了铝粉含量和炸药埋深对毁伤效应的影响，利用高速摄影机拍摄了混凝土靶毁伤过程。结果表明：炸药埋深对炸药的毁伤效果有着重要的影响，埋深为30 cm时的毁伤效果要远大于10 cm时，当炸药的埋深为10 cm时含铝量为15%的炸药毁伤效果最佳；铝粉含量越高，火光面积越大，持续的时间越长。Abstract: In order to investigate the damage effect of aluminized explosives in concrete, three types of aluminized explosive with different aluminum contents were blasted on small concrete targets.High speed camera was used to capture the blasting progress.Experimental results show that the depth of charge has important influence on the damage, and the damage effect at 30 cm buried depth is more serious than 10 cm buried depth.The aluminized explosives with aluminum content 15% has the best damage effect at 10 cm buried depth, which indicates that modest amounts of aluminum can increase the concrete blasting performance of aluminized explosives.
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Key words:
- explosion mechanics /
- aluminized explosive /
- concrete /
- crater /
- damage effect
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表 1 药柱配方及尺寸
Table 1. Composites and size of charges
Explosive Composition Size of charge/(mm) Density/(g/cm3) Detonation heat/(kJ/g) RDX RDX Ø35×43.1 1.673 5.879 HL15 RDX/Al (15/85) Ø35×41.3 1.763 6.736 HL30 RDX/Al (70/30) Ø35×39.0 1.865 7.594 
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表 2 10 cm埋深下毁伤结果数据
Table 2. Results of craters with different charges at 10 cm buried depth
Explosive Area of
crater/(cm2)Average radius of
crater/(cm)Volume of
crater/(L)Duration of
flame/(ms)Crater index RDX 2 329 27.2 7.60 2 2.72 HL15 2 562 28.6 8.13 42 2.86 HL30 2 076 25.7 6.37 60 2.57
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