论文部分内容阅读
介绍了大城勘查区地质背景和全区可采煤层5#煤的基本情况。分析了煤层的煤岩特性,宏观煤岩类型多为镜煤和亮煤;有机显微煤岩类型以镜质组为主,矿物主要由黏土组成。煤质分析表明:原煤属低-中灰、中高挥发分、中硫、低磷、特低氟、低氯煤;镓在钻孔20-1和46-1达到工业品位。煤层以气煤为主,属高发热量、中等-强黏结性、弱结渣性、中等可选-较难选煤。通过研究煤质特征,发现5#煤层用途广泛,主要用作炼焦配煤和动力用煤。
The geological background of Dacheng exploration area and the basic situation of coal seam 5 # coal in the whole area are introduced. The characteristics of coal and rock in the coal seam are analyzed. Most of the macroscopic coal and rock types are mirror coal and bright coal. The organic micro coal and rock types are dominated by vitrinite and the minerals are mainly composed of clay. Coal quality analysis shows that the raw coal is low-medium ash, medium-high volatile, medium sulfur, low phosphorus, extra-low fluorine and low-chloride coal; gallium reaches industrial grade in boreholes 20-1 and 46-1. The coal seam is dominated by gas coal, which belongs to high calorific value, moderate - strong bondability, weak slagging, moderately optional - it is difficult to select coal. Through the study of coal quality characteristics, it is found that Coal Seam 5 has a wide range of uses and is mainly used for coke blending and power coal.