贵州省煤炭资源赋存规律

Occurrence regularities of coal resources in Guizhou Province

通过系统收集、整理贵州省50余年来的各项煤田地质勘查资料和科研成果,以聚煤规律和构造控煤作用为切入点,对贵州省煤炭资源赋存规律进行研究。结果表明:贵州含煤区主要位于扬子陆块南部被动边缘褶冲带上,赋煤单元划分为4个赋煤带9个煤田,共有5类15种控煤构造样式,控煤构造方向有近南北向、北东向、北西向和近东西向4组;本区主要含煤地层为上二叠统,沉积古地理自西向东由陆相逐渐向海相过渡,其中三角洲平原相聚煤最好,聚煤中心在西部盘县、水城一带,煤层以中灰分、中—高硫煤为主,煤的变质作用类型主要为深成变质作用和区域岩浆热变质作用。研究结果为贵州省煤炭资源潜力评价提供依据,对煤炭资源进一步勘查具有指导意义。

Based on systematical collection and analysis of coal geological exploration and research achievements of Guizhou Province since more than 50 years, using coal accumulation law and tectonic controlling action of coal, the paper studied the occurrence of coal resources in Guizhou Province. The results could be showed in the fol- lowing aspects： coal-bearing areas of Guizhou are mainly located in fold-thrust belt of passive margin of southern Yangtze block, where the coal units can be classified into 4 coal belts and 9 coalfields. There are 5 categories and 15 kinds of coal-controlling structural styles in total. The coal-controlling tectonic directions can be divided into 4 groups, which are nearly NS-trending, NE-trending, NW-trending, and nearly EW-trending. Upper Permian is the main coal-bearing strata, in which depositional paleogeography has gradually changed from continental facies to marine facies from the west to the east. Delta plain was the best coal-accumulating environment, coal accumulation center is along western Panxian-Shuicheng region, and the coal is characterized by medium ash and mid-high sulfur What＇s more, plutonic metamorphism and telemagmatic thermal metamorphism are the main coal metamorphic types in the area. Based on the study of coal occurrence regularity, the results will provide reference for the poten- tial evaluation of coal resource and play a significant guiding role in the further coal exploration of Guizhou.