浅析贵州二叠系上统龙潭组27号煤层的聚煤规律

通过对27号煤层沉积背景、环境演化过程、分布特点、赋存状态、结构特点和煤厚变化特征进行分析，认为27号煤层主要沉积于海陆交互相环境，赋存在龙潭组中下部，厚0．1～4．8m，为薄-中厚煤层。该煤层在威宁-毕节以东、兴仁-贵阳-遵义以西范嗣内都有分布，夹石0～5层，～般为3层，向两南方向夹层增多。煤层厚度有北薄南厚、由西向东为薄-厚-薄的变化规律，六盘水煤田、织纳煤田为聚煤中心地带，

Upper Permian Series Longtan Formation No.27 Coal Seam Coal-accumulating Pattern in Guizhou Province

Analyzed coal seam accumulating setting, environmental evolution process, distribution features, hosting state, texture characteristics and coal seam thickness changing characters of the No.27 coal seam, considered that the coal seam was mainly deposited in a marine-terrestrial alternating environment and hosted in middle and lower part of the Longtan Formation, a 0.1-4.8m thin-medium thick coal seam. The coal seam is distributed within the extent to the east of Weining-Bijie, to the west of Xingren- Guiyang-Zunyi, with 0-5 partings, generally 3 partings, parting number increasing to southwest. The coal seam is thin in north, thick in south. From west to east has a changing trend of thin-thick-thin, while the Lupanshui and Zhina coalfields are located in the coalaccumulating center.