摘要
运用光学显微镜及显微光度计和煤质分析等技术方法,对准格尔中部矿区侏罗系中下统延安组4、5号煤层进行了研究。结果显示4号煤水分高(M_(ad)=14. 16%),灰分低(A_d=9. 19%),挥发分高(V_(daf)=36. 64%),变质程度低(R_(ran)=0. 37%),硫分中等(S_(t,d)=2. 22%),惰质组含量高(42. 9%); 5号煤水分高(M_(ad)=13. 02%),灰分低(A_d=6. 78%),挥发分高(V_(daf)=36. 87%),变质程度低(R_(ran)=0. 38%),硫分特低(S_(t,d)=0. 44%),惰质组含量高(47. 7%)。煤层垂向上镜质组与惰质组含量变化都很大,反映聚煤环境有时干燥,有时潮湿的反复变化过程。
Through optical microscope, microphotometer and coal quality analysis carried out studies on middle and lower Jurassic Yan＇ an Formation coal Nos. 4 and 5 in Junggar Basin middle mining area. The studied results have shown that the coal No. 4 has high moisture （Mad 14. 16% ）, low ash （Ad 9. 19% ）, high volatile matter （ Vdaf 36. 64% ）, low metamorphic degree （Rran 0. 37% ）, medium sulfur （St,d 2. 22% ）, and high inertinite （42. 9% ） ; coal No. 5 has high moisture （Mad 13.02% ）, low ash （Ad 6. 78% ）, high volatile matter （ Vdaf 36. 87% ）, low metamorphic degree （Rran 0. 38% ）, ultra low sulfur （St,d 0. 44% ） and high inertinite （47. 7% ）. The coal vitrinite and inerfinite contents vary a lot vertically; have reflected coal accummulation environment sometime dry and sometime wet repeatedly variable process.
作者
闻明忠
吴占彩
Wen Mingzhong;Wu Zhancai(Jiangsu Geology and Mineral Resources Design and Research Institute,Xuzhou,Jiangsu 221006;CNACG Key Laboratory of Mineral Resources in Coal Measures,Xuzhou,Jiangsu 221006)
出处
《中国煤炭地质》
2018年第A01期6-11,89,共7页
Coal Geology of China
关键词
准格尔中部矿区
延安组
煤岩
煤质
Junggar Basin middle mining area
Yan＇an Formation
coal petrology
coal quality
