Wu Dun, Sun Ruo-Yu, Liu Gui-Jian, Yuan Zi-Jiao
Key Laboratory of Crust-Mantle Material and Environments, Chinese Academy of Sciences, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2013 Oct;33(10):2861-4.
The structural parameters evolution of coal due to the influence of intrusions of hot magma was investigated and analyzed. X-ray diffraction and laser confocal microscope Raman spectroscopy were used to test and analyze 4 coal samples undergoing varying contact-metamorphism by igneous magmas in borehole No. 13-4 of Zhuji coal mine, Huainan coalfield. The result showed that coal XRD spectrum showed higher background intensity, with the 26 degrees and 42 degrees nearby apparent graphite diffraction peak. Two significant vibration peaks of coal Raman spectra were observed in the 1 000-2 000 cm(-1) frequency range: broad "D" peak at 1 328-1 369 cm(-1) and sharp "G" peak at 1 564-1 599 cm(-1). With the influence of magma intrusion, the relationship between coal structural parameters and coal ranks was excellent.
研究并分析了热岩浆侵入对煤结构参数演化的影响。利用X射线衍射和激光共聚焦显微镜拉曼光谱，对淮南煤田朱集煤矿13-4钻孔中经历不同程度接触变质作用的4个煤样进行了测试分析。结果表明，煤的XRD谱图背景强度较高，在26°和42°附近有明显的石墨衍射峰。在1000-2000cm(-1)频率范围内观察到煤拉曼光谱的两个显著振动峰：1328-1369cm(-1)处的宽“D”峰和1564-1599cm(-1)处的尖锐“G”峰。受岩浆侵入影响，煤结构参数与煤阶之间具有良好的相关性。
