摘要
五凤井田龙潭组含煤层数多,厚度变化较大,根据井田钻孔地质资料,采用标志层法、古生物法,结合物性特征及煤质特征等对井田主要可采煤层进行对比。该井田6号煤位于龙潭组顶部,上距龙潭组顶部灰岩标志层6m,±常分叉为6上、6中、6下三层,6中煤层平均厚度>2m,为全区最厚,且唯一可采煤层,对比可靠;26号煤位于龙潭组中段底部,结构简单,无夹石,其直接顶板为高伽马异常,与上下相邻煤层区别明显;33号煤位于龙潭组下段,是井田内唯一一层大可部分可采的高硫煤,易于对比。
The Longtan Formation in Wufeng minefield contains many coal seams and variable coal thickness, based on minefield borehole geological data carried out main mineable coal seam correlation through the use of marker bed, paleontological methods combined with physical and coal quality characteristics. The No.6 coal seam is situated in the top part of Longtan Formation, below the top limestone marker bed 6m±, often split into Nos.6u, 6m and 61 three coal seams, the No.6m coal seam＇s average thickness 〉 2m, is the thickest and only mineable coal seam and its correlation is reliable. The No.26 coal seam is situated in bottom part of middle member of Longtan Formation, simple textured with no parting, its direct roof has high gamma anomaly, obviously different from coal seams under and above. The No.33 coal seam is situated in lower member of Longtan Formation, the only most part mineable coal seam in the minefield with high sulfur content and easy to correlate.
出处
《中国煤炭地质》
2008年第4期33-35,59,共4页
Coal Geology of China
关键词
主采煤层
对比方法
龙潭组
五凤井田
main mineable coal seam
correlation method
Longtan Formation
Wufeng minefield
