CAJ | 학술논문

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d_(002)值逐渐减小,层片堆积高度L_c和层片直径L_a值逐渐增大;平面上,离岩浆侵入体越近,煤层的层间距d_(002)值越小,反之d_(002)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.
형태륭동정전매변질정황복잡,직접영향매적공업이용.이용X-사선연사(XRD)법탐토료구내불동변질정도매적기본결구단원특정급매변질규률.결과현시:수향상,수착매층매장심도적증가,층편간거d_(002)치축점감소,층편퇴적고도L_c화층편직경L_a치축점증대;평면상,리암장침입체월근,매층적층간거d_(002)치월소,반지d_(002)치월대.재매충분포상,인수암장열원적영향,정전내매충이구성위중심향외정대상분포,구성부근위무연매,향외축점과도위빈매、수매、초매、비매화기매.구내매변질작용주요수구역변질작용영향,병첩가료암장열변질작용.
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 d_(002) values decrease, whereas L_c and L_a values increase. In the level direction, d_(002) 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.