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本文系研究抚顺北老虎台区第三纪抚顺组上部含煤段的本层煤。该煤层厚度巨大(达百余米)、结构复杂,煤的牌号虽均属气煤,但其胶质层厚度(y值,毫米)在垂直方向上有时差异很大。目前,胶质层厚度仍是评价煤质的重要工业指标之一。为了弄清原因,我们对五个钻孔、一个井下取样剖面共230个样品的薄、光片(包括煤砖光片)进行了煤岩鉴定、反射率测量和化验分析,结果表明,其主要原因系由于煤岩组成不同所致。
This paper is to study the coal strata of the upper coal-bearing section of the Fushun Formation in the Tertiary Period in the North Taiwan Fushu, Fushun. The thickness of the coal seam is huge (up to a hundred meters), and the structure is complex. Although the coal grades are all coal and gas, the thickness of the gypsum layer (y value, mm) varies greatly in the vertical direction sometimes. At present, the thickness of the glue layer is still one of the important industrial indexes for evaluating coal quality. In order to clarify the reasons, we conducted coal rock identification, reflectance measurement and laboratory analysis on a total of 230 samples of five boreholes and one downhole sampling profile, including coal bricks. The results show that the major The reason is due to the different composition of coal and rock.