山西省太原组和山西组煤的煤岩特征分析

Taiyuan and Shanxi Formations Coal Petrologic Feature Analyses in Shanxi Province

在收集和整理大量山西省煤岩资料的基础上,分析了该省太原组和山西组煤的显微煤岩组分,并对各煤田太原组和山西组煤的R0,max的变化规律进行了研究。研究表明:山西省太原组和山西组煤中显微组分一般以镜质组为主,并且有从北向南有不断增加的趋势,惰质组次之,其趋势与镜质组相反,壳质组最少;太原组反射率值在0.6%～3.9%,整体上呈北低南高、西低东高的趋势,煤级从中煤级煤Ⅰ到高煤级煤Ⅱ都有赋存;山西组反射率值在0.6%～4.2%,其反射率变化趋势和煤级赋存特征与山西组类似。研究结果为评价和利用山西省的煤炭资源提供了依据。

Based on collecting and sorting of abundant coal petrologic data in the Shanxi Province,analyzed microlithotypes of coals in the Taiyuan and Shanxi formations,and studied their Rmax variation patterns.The study has demonstrated that： microlithotype in Taiyuan Formation and Shanxi Formation coals is mainly vitrinite,and has a trend of increasing form north to south;inertinite content the second and the trend on the contrary;exinite content the least.The reflectance of coal maceral of Taiyuan Formation coal is 0.6%～3.9%,presents a trend of low north,high south and low west,high east;and hosted coals are from middle-rank coal I to high-rank coal II.The reflectance of coal maceral of Shanxi Formation coal is 0.6%～4.2%,its variation trend and coal rank features are similar to coals in Taiyuan Formation.The result can be the basis of Shanxi coal resources assessment and utilization.