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松扣弹作用原理
遇卡管柱经测准卡点后,用电缆连接工具人井至预定接箍深度无误后,引爆雷管、导爆索,爆炸后产生的高速压力波使螺纹牙间的摩擦和自锁性瞬间消失或者大量减弱,迫使接箍处的两连接螺纹在预先施行的反扭矩及上提力作用下松扣、爆炸后即可旋转管柱,继续完成倒扣
expl.
acting principle of dynamite break outing pack
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