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压碴爆破
在露天采场台阶坡面上留有上次的爆堆情况下进行爆破的方法。将已破碎岩体作为一种缓冲物,向破碎岩体抛掷的爆破。实验室和现场爆破试验表明,药量一定时,如果缓冲岩石的膨胀因子为1. 5左右,与无丝毫缓冲物的爆破相比,其块度将得到改善
expl.
buffer blasting
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