【摘要】 为了降低切割索爆炸的附带毁伤，对其背向爆炸压力场的分布及演化进行了研究。应用平面点爆炸理论和数值模拟对线性装药与平板接触爆炸压力场进行了分析，结果表明在大于12倍装药半径的距离上数值模拟与理论结果一致，装药截面形状对冲击波峰值压力的影响可忽略，平面点爆炸模型可用于切割索背向爆炸压力进行估算。根据数值模拟结果，拟合了平面比例距离0.25～1.45 m^3/2 kg^-1/2范围内裸炸药条及铅壳切割索背向爆炸冲击波峰值压力的经验公式。更多还原

【Abstract】 The explosion pressures on the back orientation of shaped charge cutting cables were investigated in this work for future low lateral damage designing. To the slab cutting job, a plane point explosion model and numerical simulations were employed to analyze the explosion pressure of linear charge. The results showed that the peak explosion pressures of naked charges calculated from numerical models were consistent with that of theoretical model in the distance large than 12 folds charge radius, and the section shape has little influence to the peak explosion pressure. The planar point explosion model can be used for estimation of explosion pressure of long naked linear charge blasting on a plane. Empirical equations were suggested according to the numerical simulations for the calculation of peak explosion pressure with planar scaled distance in 0.25～1.45 m^3/2 kg^-1/2 on the back direction of naked linear charge and shaped charge cutting cable.更多还原