嘉荫盆地乌云组褐煤煤相特征分析

Analysis of lignite facies of Wuyun coal mine formation in Jiayin basin

对嘉荫县乌云煤矿的2号、3号及1号煤层进行了煤相分析,认为乌云煤矿煤层成煤时为浅覆水的滞流泥炭沼泽相。3号煤层属潮湿型森林沼泽,2号煤层属干澡的森林沼泽。通过建立的三端元煤相分类图,乌云煤矿3号煤层(去掉夹矸)共23个分层,多数落在森林沼泽相区,2号煤层基本是湖沼相中间夹少量芦苇沼泽相。

The coal facies of No.2,No.3 and No.1 coal seams in Wuyun coal mine of Jiayin county are analyzed.It is considered that the coal seams in Wuyun coal mine are stagnant peat swamp facies with shallow overlying water.Coal seam No.3 belongs to wet forest marsh,and coal seam No.2 belongs to dry-bathed forest marsh.According to the three-terminal coal facies classification map,there are 23 layers in No.3 coal seam of Wuyun coal mine,most of which are located in the forest-marsh facies area,while No.2 coal seam is basically composed of a small amount of reed-marsh facies in the middle of the lake-marsh facies.