在露天煤矿,由于煤台阶一次爆破量大,不可能用大量筛分的方法求其块度分布规律;因此,长期以来,人们一直把选煤厂入选后的块度分布规律做为煤台阶爆破破碎后的分布规律。实际上,装车、运输、翻车、选煤都要破碎一部分煤块,使粉煤增多,故这种方法是不准确的。假如我们要能用某种方法验证其爆破块度分布服从某种规 In the open-pit coal mine, because of the large amount of blasting once in the coal step, it is impossible to find out the rule of block distribution with a large amount of screening. Therefore, for a long period of time, Broken distribution. In fact, loading, transporting, overturning, and coal preparation all need to crush a part of the coal so as to increase the amount of pulverized coal. Therefore, this method is inaccurate. Suppose we want to be able to use some method to verify that the distribution of the rupture size obeys a certain rule