内蒙古早白垩世五间房含煤盆地煤层煤相分析.pdf

第39 卷 第3 期 煤田地质与勘探 Vol. 39 No.3 2011 年6 月 COAL GEOLOGY EXPLORATION Jun. 2011 文章编号: 1001-1986(2011)03-0001-06 内蒙古早白垩世五间房含煤盆地煤层煤相分析 1 1 2 1 付黎明 ，庄新国 ，李建伏 ，庞起发 (1. 中国地质大学构造与油气资源教育部重点实验室，湖北 武汉 430074 ； 2. 内蒙古地质工程有限责任公司，内蒙古 呼和浩特 010000) ：内蒙古是我国非常重要的后备煤炭资源基地，煤层大多聚集在白垩纪断陷盆地中，其中， 五间房含煤盆地煤炭资源丰富。通过对该盆地东南部 3 个钻孔 57 件煤样的煤岩学和煤化学分析， 探讨了煤层的煤质特征、煤相类型及其演化规律。研究结果表明：本区煤层以低— 中高灰、高挥 发分产率和低—特低硫为特征；具有较高的镜/惰比和结构保存指数；煤相类型主要为潮湿森林沼 泽相，自下而上，成煤泥炭沼泽覆水程度总体有所加深，上部泥炭沼泽具有水体逐渐加深的水进 型特征，下部泥炭沼泽具有水体逐渐变浅的水退型特征。 ：显微组分；煤质；煤相；五间房含煤盆地 ：P618.11 ：A DOI: 10.3969/j.issn.1001-1986.2011.03.001 The analysis on coal facies of coal seams in early Cretaceous Wujianfang coal basin, Inner Mongolia 1 1 2 1 FU Liming , ZHUANG Xinguo , LI Jianfu , PANG Qifa (1. Key Laboratory Tectonics and Petroleum Resources Ministry of Education, Wuhan 430074, China; 2. Inner Mongolia Geological Engineering Company Limited, Hohhot 010000, China) Abstract: Inner Mongolia is a very important coal-resources reserve base in China, where most of the coal seams are accumulated in the Cretaceous faulted basins. The Wujianfang coal basin is rich in coal resources, and the total explored reserves of coal is 10.77 billion tons according to the general and detailed survey of coal resources. Based on the coal petrological and chemical analysis of fifty-seven coal samples from three wells in the southeast of the coal basin, the coal quality characteristics, coal facies types and their evolution characteristics of coal seams are discussed. T