夹石又称夹层,指夹于矿体(层)内部和处于紧邻矿体(层)之间的非矿岩石(包括低于边界品位的含矿岩石),其形状呈透镜状、层状或不规则状。在矿床的储量计算中夹石的剔除受一工业指标的限制。
对于煤层内夹石厚度比较大的情况,建议不采用放顶煤开采。
是沉积岩的一种,其纹理成层状结构,在层与层之间夹一层浅灰岩石,石纹成横向,外形似久经风雨侵蚀的岩层。
Melaleuca stone is a sedimentary rock, its texture into layered structure, sandwiching a layer of gray rock between layers, stone Wencheng transverse, resembling the weathered rock erosion.
千层石是沉积岩的一种,其纹理成层状结构,在层与层之间夹一层浅灰岩石,石纹成横向,外形似久经风雨侵蚀的岩层。
Melaleuca stone is a sedimentary rock, its texture into layered structure, sandwiching a layer of gray rock between layers, stone Wencheng transverse, resembling the weathered rock erosion.
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