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为了计算用爆破方法破碎矿岩的块度平均直径,建议用下面的公式(1):式中:d——炮孔直径;f——普氏硬度系数。这个公式按照现有的方法计算爆破参数时,表明是正确的。由于工业爆破得到的d_(cp)与根据(1)式计算的d_(cp)相比较表明,只有对整体的和节理不发育的岩石才相符。在图1上算出了诺里尔斯克()公司节理不发育的岩石(f=13～8,单位炸药消耗量q=0.7公斤/米~3)和节理发
In order to calculate the block average diameter of the rock by blasting, it is recommended to use the following formula (1): Where: d - hole diameter; f - Platts hardness. This formula shows that it is correct when calculating blasting parameters according to the existing methods. The comparison of d_ (cp) obtained from industrial blasting with d_ (cp) calculated from (1) shows that it is only consistent with the overall and unconformity rocks. In Figure 1, Norilsk joints (f = 13-8, unit explosive consumption q = 0.7 kg / m ~ 3) and joints