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首页 » 石材开采

天然石材矿山开采的两大分类

矿山开采。分为人工开采和爆破开采两类。爆破开采又有微爆破开采和大爆破开采两类。大理石、沿海一带的花岗石(沿海一带花岗石比较软)常常用人工开采或微爆破开采，四川一带的花岗石(比较坚硬)一般用大爆破开采。大爆破开采材料利用率很低，大部分都在爆破中碎裂了，因此除非很
石材开采
作者：发表于：2016-07-08 14:21:34
共 1 篇

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