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通过收集整理贵州省龙潭煤系勘探资料,分析龙潭组内不同环境成煤序列,对比龙潭组早期和晚期岩相古地理特征对煤层发育的影响,认为贵州省龙潭组厚煤层主要分布在习水-仁怀、织金、六枝、普安和水城区域,均处于潮坪和三角洲-泻湖沉积环境中。在潮坪环境中,厚煤层发育于潮上带的泥潭沼泽中。在三角洲-泻湖沉积环境中,泻湖中发育的泥炭沼泽是厚煤形成的最有利场所。龙潭早晚期,为海进时期,三角洲砂体大面积萎缩,煤层发育好,有利聚煤环境发育面积大,是最有利的聚煤时期。
By collecting and analyzing the exploration data of Longtan Coal Measures in Guizhou Province and analyzing the sequence of coal formation in different environments in Longtan Formation and comparing the influence of the early and late lithofacies palaeogeographical features on the coal seam development in Longtan Formation, it is concluded that the thick coal seams of Longtan Formation in Guizhou Province are mainly distributed in Xiushui - Renhuai, Zhijin, Liuzhi, Pu’an and Watertown areas are all in the tidal flat and delta-lagoon sedimentary environment. In tidal flat environments, thick seams develop in the marsh of the tidal zone. In the delta-lagoon sedimentary environment, peat bogs developed in lagoons are the most favorable sites for the formation of thick coal. In the early and late Longtan period, it was the most favorable period of coal accumulation during the Hai-Jin period when the delta sand body shrank in a large area, the coal seam developed well and the favorable coal accumulation area developed.