改性铵油炸药连续爆速实验研究

Experimental Study on Continuous Detonation Velocity of Modified ANFO

采用连续速度探针研究改性铵油炸药在不同起爆条件下爆速和爆轰成长的连续变化。在起爆条件分别为雷管/160g起爆药柱、雷管/160g起爆药柱/有机玻璃隔板和仅采用雷管时,改性铵油炸药在稳定爆轰阶段的稳定爆速分别为4569m/s、4496m/s、4559m/s,爆轰成长距离分别为3.5、7.3和20cm,爆轰成长时间分别为0.01、0.025和0.06ms。结果表明,在相同的装药约束条件下,起爆能量越大,改性铵油炸药爆轰成长时间和爆轰成长距离越短,即越容易发展为稳定爆轰。

The continuous velocity probe was chosen to study the continuous detonation velocity and detonation development of modified ANFO under different ignition conditions. The experimental results show that, for modified ANFO with the different conditions of priming, which were： detonator/160g booster charge, detonator/ 160 g booster charge/PMMA spacer and only detonator itself, the stationary detonation velocities are 4569, 4496, 4559m/s, respectively, and the run distance to detonation under such ignition conditions are 3.5, 7.3 and 20cm, respectively, the corresponding time of detonation development are 0. 01, 0. 025 and 0. 06ms. The energy of priming explosive is larger, the time of detonation development and run distance to detonation of modified ANFO are shortened, namely, the modified ANFO is easier to become steady detonation.