According to results of coal petrography and coal chemistry, this paper analyses the characteristics of coal quality and the types of coal facies. It reveals that Baiyanghe coals are characterized by high volatile yield, low ash yield and low moisture content. Vitrinite is principally enriched, followed by inertinite and exinite seldom occurs in coals, which reveals that the swamp is eutrophic, with a relatively high groundwater table. Coal facies is dominated by wet for-rest swamp, followed by wetland herbaceous swamp and dry forrest swamp seldom occurs in the upper coals. The wet forrest swamp and wetland herbaceous swamp are characterized by relatively high vitrinite content, ash yield and volatile matter. The dry forrest swamp is characterized by relatively low vitrinite content, ash yield and volatile matter.%据煤岩学和煤化学分析结果，分析研究区煤质特征和煤相类型。结果表明，研究区煤以高挥发分产率、低灰分产率和低水分含量为特征；显微组分以镜质组为主，惰质组次之和壳质组少见，揭示沼泽覆水较深，具相对还原的低位沼泽特征；煤相类型以潮湿森林沼泽相为主，湿地草本沼泽相次之，干燥森林沼泽相仅出现于中上部煤层。潮湿森林沼泽相和湿地草本沼泽相以相对富镜质组、具较高灰分产率和挥发分产率为特征；干燥森林沼泽相以相对贫镜质组、具较低灰分产率和挥发分产率为特征。
展开▼
