利用XRD法探讨邢台隆东井田煤变质规律  

Variety regularity of metamorphic coal of Longdong coalfield in Xingtai by X-ray diffraction method

作　　者：张路锁[1,2] 关英斌[3] 李海梅[3] 张国斌 赵平 李素[3] 郑建[3] 崔胜[3] 

机构地区：[1]中国矿业大学地球科学与测绘工程学院,北京100083 [2]河北省煤田地质局,河北石家庄050085 [3]河北工程大学资源学院,河北邯郸056038 [4]河北省煤田地质局第二地质队,河北邢台054000

出　　处：《煤田地质与勘探》2010年第2期1-4,共4页Coal Geology & Exploration

基　　金：国家重大基础研究发展计划(973计划)项目(2006CB202208)

摘　　要：邢台隆东井田煤变质情况复杂,直接影响煤的工业利用。利用X-射线衍射(XRD)法探讨了区内不同变质程度煤的基本结构单元特征及煤变质规律。结果显示:垂向上,随着煤层埋藏深度的增加,层片间距d002值逐渐减小,层片堆积高度Lc和层片直径La值逐渐增大;平面上,离岩浆侵入体越近,煤层的层间距d002值越小,反之d002值越大。在煤种分布上,因受岩浆热源的影响,井田内煤种以旧城为中心向外呈带状分布,旧城附近为无烟煤,向外逐渐过渡为贫煤、瘦煤、焦煤、肥煤和气煤。区内煤变质作用主要受区域变质作用影响,并叠加了岩浆热变质作用。In this paper, the character of basic structural unit and spatial-temporal variety regularity of metamorphic coals are studied through X-ray diffraction （XRD） analysis. In the vertical direction, as the burial depth increases, the d002 values decrease, whereas Lc and La values increase. In the level direction, d002 values are low when the coal seams are near the magma intrusion. On the contrary, these values are large when the coal seams are far away from the magma intrusion. Affected by magmatic heat sources, distribution of coal sorts assumes the old town as the center and takes the banding distribution outward. In the coalfield, it is found that the anthracite distributes nearby the old town and the coal sorts are lean coal, coking coal, fatty coal and gas coal outward. Coal metamorphism is mainly affected by regional metamorphism, also affected by telemagmatic metamorphism.

关 键 词：X-射线衍射 基本结构单元 岩浆热变质作用 隆东井田 

分 类 号：P618.11[天文地球—矿床学]