摘要
基于原始测试数据分析了山西白额勘探区石炭二叠纪各主要煤层煤质特征与成煤环境的关系。研究表明,区内主要可采煤层煤的显微组分均以镜质组为主,约占76%,惰质组约占19%。各煤层灰分产率总体为低—中灰煤,2、3号煤硫分属特低硫—中高硫,10号煤硫分为中高—高硫。成煤环境的水介质由咸水—半咸水—淡水,导致煤层原煤全硫及微量元素含量由下向上降低,同一煤层顶板附近煤中微量元素含量低于底板附近煤层。聚煤特征决定了煤中伴生元素的地球化学行为,使得区内煤中微量元素含量普遍较低,无明显伴生元素富集。
Analyzed relations between coal quality characteristics and coal-forming environments of each main Permo-Carboniferous coal seam in Bale exploration area, Shanxi, based on primary testing data. The study has demonstrated that the maceral of main mineable coal seams in the area is mainly vitrinite, account for about 76%, while inertinite about 19%. In the mass, ash content of each coal seam appears as low-medium ash content, Nos.2 and 3 coal seams belong to low-medium high sulfur content, No.lO coal seam medium high-high sulfur content. Water medium in coal-forming environment from bottom to top is salt water-brackish waterfresh water, thus resulted in raw coal total sulfur and trace element contents lowering down from bottom to top, in a same coal seam, trace element content near the roof is lower than near the floor. Coal accumulation characteristics have determined geochemical conducts of associated elements in coal, brought on trace element content in coal generally low, thus no obvious enrichment of associated elements.
出处
《中国煤炭地质》
2008年第11期18-20,52,共4页
Coal Geology of China
关键词
煤质特征
成煤环境
晚古生代
山西白额勘探区
Late Paleozoic
coal quality characteristics
coal-forming environment
Bale exploration area, Shanxi
