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用煤岩方法确定煤的浮沉组成,具有用煤样少,费用省,设备简单,方法简捷,结果快等一系列优点,尤其对尚未开发,处于地质勘探阶段的全掩盖区来说,这些优点尤其显得重要。因为这类地区冲积层厚达数百米,几乎没有生产小窑,无法采取生产大样进行筛浮试验。而煤岩方法恰好能用地勘阶段钻孔取出之少量煤芯样进行可选性研究,确定煤的浮沉组成,评价煤的可选性。因此煤岩方法曾引起国内外煤岩煤质工作者的注意。现根据近几年来生产实践中的体会,将有关方法概述如下,希能进一步引起煤岩煤质工作者的重视。
The coal-rock method is used to determine the composition of coal’s drifting and falling. It has the advantages of less coal sample, lower cost, simple equipment, simple and quick method and quick result. Especially for the unmasked areas that have not yet been developed and are in geological prospecting stage, Particularly important. Because alluvial layers in these areas are several hundred meters thick, there is almost no production of small kilns, and large samples can not be used for sifting tests. However, the coal-rock method is capable of carrying out optional studies with just a small amount of coal core samples removed from the boreholes in the geological prospecting stage to determine the composition of the coal and the evaluation of coal selectivities. Therefore, coal and rock methods have aroused the attention of coal and rock quality workers at home and abroad. Now based on the experience of production in recent years, the relevant methods are summarized as follows, hope to further arouse the attention of coal, rock and coal quality workers.