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根据黔北煤田花秋勘探区9、16号煤煤岩煤质鉴定资料,在参考前人研究成果的基础上,全面系统地研究了9、16号煤煤相及其发育特征。研究表明:9号煤形成于芦木芦苇沼泽相和潮湿的芦木芦苇沼泽相,芦木芦苇沼泽相分布于勘查区北部和南部东翼,潮湿的芦木芦苇沼泽相分布于南端西翼;16号煤基本形成于芦木芦苇沼泽相,少量形成于覆水森林沼泽相,覆水森林沼泽相仅分布于中部的西翼,沼泽的其它部位均为芦木芦苇沼泽相。通过分析煤相与煤中全硫、有机硫的关系,认为沉积体系所处的大环境整体控制了硫含量的高低,成煤沼泽类型控制了硫分的变化。勘查区北部、北西部及中部以东可能是9号煤潜在的低硫区,由于16号煤处于区域性的高硫层位,北东部可能是黄铁矿硫相对较高的区域。
Based on the coal quality identification data of coal seam No. 9 and No. 16 in Huacheqiu prospecting area of North Guizhou coalfield, based on the previous research results, the 9th and 16th coal and its developmental characteristics were comprehensively and systematically studied. The results show that the No.9 coal is formed in the reed swamp phase of reed and the moist reed swamp phase of reed swamp, while the reed swamp of reed is distributed in the northern part and the southern part of the southern part of the exploration area. Coal No. 16 was basically formed in the reed swamp phase of reed, a small amount formed in the overlying forest swamp phase, and the overlying forest swamp phase was only distributed in the central west wing. The rest of the marsh was reed swamp phase. By analyzing the relationship between coal phase and total sulfur and organic sulfur in coal, it is considered that the environment in which the sedimentary system is located controls the overall sulfur content, and the type of coal formation controls the change of sulfur. The northern, northwestern and central east of the exploration area may be the potential low sulfur area of No.9 coal. Due to the regional high sulfur level of No.16 coal, the northeast may be the area with relatively high pyrite sulfur content.