豫西高煤级煤中有机元素及统计结构的演化与煤化作用跃变

依据工业分析和元素分析数据,利用统计结构方法,求得了豫西主要高煤级煤矿区太原组与山西组镜煤的大分子结构参数及真密度,并据此进一步分析了有机元素及结构参数的煤化作用规律及其地质原因.结果表明:在高煤级煤早期阶段,形成于不同成煤环境的太原组煤与山西组煤的煤化特征仍有差异,在第三次煤化作用跃变之后这种差异逐渐缩小消失;高煤级煤分别以第三次和第四次煤化作用跃变为界,呈现出阶段性演化的特征,每阶段的演化机理有所不同;第三次煤化作用跃变中大分子结构的演化以芳构化作用主为,第四次煤化作用跃变则以强烈的环缩合作用占优势.

EVOLUTION OF THE ORGANIC ELEMENTS AND THE STATISTICAL STRUCTURES AND COALIFICATION JUMPS OF THE HIGH-RANK COALS FROM THE NORTH-WESTERN HENAN, CHINA

Based on the data from the proxina and ultimate analyses of vitrains in the high-rank coals from the West-northern Henan, their macromolocular structures and true density were calculated, the further exploration was made on the coalified pattern and geological causes. The results show:1), there were the differences between the characteristics of the coalification between the Taiyuan Formation vitrain and the Shanxi Formation vitrain which were formed in differencial coal-forming environments, and the differences gra-dually lowered and even disappeared with the rank increasing; 2), the coalification developed by stages, the onsets of which correspondened respectively to the 3rd and the 4th coalification jumps; 3), the evolution of the macromolecular structure during the 3rd jump was predominantly resulted form aromatization but that during the 4th jump from codensation.