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Terms for subject Explosives and Explosive Ordnance Disposal containing 足部 | all forms
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在爆破中产生飞石所消耗的能量低于传递给岩石全部能量的1%、因此以这种形式浪费的爆炸能可以说微不足道The energy spent in creating flyrock during blasting is less than 1 % of the total energy transferred to the rock, hence the wastage of explosive energy in this form maybe insignificant
飞石产生的主要原因包括抵抗线不足、炮泥长度不够、钻孔不精确、单位炸药消耗量过多、地质条件不利露天节理、矿层不稳固和空穴、延时定时和序列不当、延时不精确、发生反向爆破、以及台阶上部岩石松散等The major causes of flyrock are inadequate burden, inadequate stemming length, drilling inaccuracy, excessive powder factor,unfavorable geological conditions open joints, weak seams and cavities, inappropriate delay timing and sequence, inaccuracy of delays, back break and loose rock on top of the bench