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湖南马田矿区贯二中井田含煤地层为上二迭统龙潭组,共含煤8层。主要可采煤层为3~2煤层,次要可采煤层为2煤层和4~2煤层。全矿区的主要可采煤层4煤层和5煤层,在本井田变为次要煤层甚至不可采。由于3~2煤层伪顶泥岩比较发育,局部很难和2煤层的顶板泥岩区分。通过灰成分分析,发现3~2煤层灰成分中SiO_2的含量比2煤层高得多,又发见3~2煤层灰成分中Fe_2O_3的含量比2媒层低得多。此外,2煤层和3~2煤层硫分的含量也有很
The coal-bearing strata of the Second Middle Zhongjing Mine in Matian Mining Area in Hunan Province are the Longtan Formation on the Upper Permian, with a total of 8 layers of coal. The main recoverable coal seam is 3 ~ 2 seam, the secondary recoverable seam is 2 seam and 4 ~ 2 seam. 4 coal seam and 5 coal seam of the main recoverable coal seam in the whole mining area can not even be turned into secondary coal seams in this mine field. Due to the relatively developed 3 to 2 coal seam pseudo-top mudstone, it is very difficult to distinguish the top mudstone of 2 seam locally. Through the gray component analysis, it is found that the content of SiO_2 in 3 ~ 2 coal seam ash content is much higher than that of coal seam 2, and the contents of Fe_2O_3 in 3 ~ 2 coal seam ash content are much lower than that of 2 coal bed. In addition, 2 and 3 ~ 2 coal seam sulfur content is also very high