平山湖地区7-2层煤煤质特征及其成煤环境意义  

Coal quality characteristic of 7-2 seam in Pingshanhu area and its significance of Coal formation environment

作　　者：琚惠姣 

机构地区：[1]甘肃煤炭地质勘查院,甘肃兰州730000

出　　处：《煤质技术》2015年第4期42-44,共3页Coal Quality Technology

摘　　要：根据平山湖地区7—2层煤的煤岩、工业分析及灰成分分析数据,结合煤岩及煤质特征对其煤岩、工业分析、灰成分与成煤环境的关系进行分析研究。研究结果表明:平山湖地区7—2层煤的显微煤岩组分以镜质组为主,惰质组次之,壳质组最少;镜惰比平均值较低,沼泽覆水较浅;7—2层煤具有低硫、中灰煤特征,其不受海水的影响,表现出陆相成煤的主要特点;煤中灰成分指数及灰成分端元分析法显示,7—2层煤形成于覆水较浅、水动力较强而还原性较弱的聚煤环境,此与根据镜惰比、全硫所得的结论一致。According to test data of coal petrography,ash,total sulfur and ash composition of coal from 7—2 seam in Pingshanhu area,this paper provided an overall coal quality characteristic evaluation for 7—2 seam,the correlation between aspects such as coal petrography,ash,total sulfur and ash composition and coal formation environment was systematically discussed.The results showed that the major macerals were vitrinite,secondly,the inertinite,and exinite was the least;vitrinite/ inertinite ratio was lower than the average value,swamp water was shallow;7—2 seam coal had characteristics such as middle ash and low sulfur,it was not affected by sea,characteristics of terrestrial facies of coal was represented;ash composition analysis and end —member analysis indicated that 7—2seam was formed in coal accumulation environments of shallow water,strong hydrodynamic force and weak reduction,which was similar to the conclusion got from V/I and sulfur content.

关 键 词：煤质特征 成煤环境 平山湖地区 显微煤岩组分 镜惰比 

分 类 号：TQ531[化学工程—煤化学工程]