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Terms for subject Explosives and Explosive Ordnance Disposal containing 原地的 | all forms
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用质点振速表示爆破地震效应强度的原因1. 质点振动速度不受覆盖层类型及其厚度的影响。 2. 可适用于不同的测量仪器、不同的测量方法和不同的爆破条件。(3)结构的破坏与质点振动速度的相关关系比位移或加速度更为密切reason for using particle vibrating velocity to illustrate blasting vibration intensity
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