黔北林华井田煤质参数特征及其成煤沉积环境意义

发布时间：2018-11-16 08:08

【摘要】：基于林华井田主采煤层煤样的工业分析、硫分及灰分等数据,评价了该区龙潭组煤的总体煤质特征,并探讨了煤中硫分和灰分与成煤沉积环境的关系。研究结果表明:黔北林华井田龙潭组煤具有热演化程度高、煤岩类型多样、灰分和硫分中等-高、水分含量极低等特征,煤种属3号无烟煤。硫的形态数据分析显示,煤中黄铁矿硫占全硫比重较大,全硫分低于3.0%的煤层中黄铁矿硫含量与全硫分含量呈线性正相关。主采煤层硫分及灰成分组成参数的纵向变化规律可清晰反演龙潭组成煤沼泽微环境的变化,综合分析确定黔北林华井田的13煤、15煤形成于受海水影响作用较大的o_湖相泥炭沼泽环境,而4煤、5煤、9煤形成于受海水影响较小的潮坪相泥炭沼泽环境。
[Abstract]:Based on the industrial analysis, sulfur content and ash content of coal samples in main coal seam of Lin Hua mine field, the overall coal quality characteristics of Longtan formation in this area are evaluated, and the relationship between sulfur and ash content in coal and coal-forming sedimentary environment is discussed. The results show that the Longtan formation coal in Lin Hua mine field in northern Guizhou has the characteristics of high thermal evolution, diverse types of coal and rock, medium to high ash and sulphur content, and extremely low moisture content. The coal belongs to No. 3 anthracite. The analysis of sulfur morphological data shows that pyrite sulfur in coal has a large proportion of total sulfur, and there is a linear positive correlation between pyrite sulfur content and total sulfur content in coal seam with total sulfur content less than 3.0%. The longitudinal variation rule of sulfur and ash composition parameters in main coal seam can clearly reverse the change of coal swamp microenvironment in Longtan coal mine, and the 13 coal in Lin Hua mine field in northern Guizhou is determined by comprehensive analysis. 15 coal was formed in the olake peat swamp environment, while 4 coal, 5 coal and 9 coal formed in the tidal flat peat swamp environment which was less affected by sea water.
【作者单位】：中国地质调查局油气资源调查中心;贵州省煤层气页岩气工程技术研究中心;煤炭科学研究总院;
【基金】：国家科技重大专项资助项目(2016ZX05034) 中国地质调查局资助项目(DD20160181) 贵州省地质勘查基金资助项目(2016-03)
【分类号】：P618.11

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