| 陕北三叠纪煤田中—特高油产率煤分布规律及成因机理 |
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| 引用本文： | 马丽,段中会,贺丹,周蕾,吕婷婷,闫和平,王锐.陕北三叠纪煤田中—特高油产率煤分布规律及成因机理[J].中国煤炭地质,2022(1). |
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| 作者姓名： | 马丽 段中会 贺丹 周蕾 吕婷婷 闫和平 王锐 |
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| 作者单位： | 自然资源部煤炭资源勘查与综合利用重点实验室;陕西省煤田地质集团有限公司;西安科技大学地质与环境学院 |
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| 基金项目： | 自然资源部煤炭资源勘查与综合利用重点实验室开放课题(SMDZ2019-2)。 |
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| 摘 要： | 以子长矿区内分布的300余组钻孔数据为基础,研究了陕北三叠纪煤田煤炭资源的物理化学性质,按照《煤中焦油含量分级》(MT/T1179—2019),划分了中油产率煤(7.0%<ω(Tard)<12.0%)和高油产率煤(12.0%<ω(Tard)<15.0%)的分布范围,预测了中—特高油产率煤的资源量。研究了矿区主采煤层3号煤层和5号煤层的煤质、沉积环境、变质程度等,认为矿区内中—特高油产率煤具一低两高的特征:镜质体反射率高(0.61%~0.83%)、变质程度低、挥发分高(35.78%~45.64%),认为成煤环境及变质程度是影响煤层富油的关键因素,研究区内5号煤层的焦油产率略高于3号煤层。
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| 关 键 词： | 陕北三叠纪煤田 中—特高油产率煤 焦油产率 变质程度 |
Medium-Extra high Tar Yield Coal Resources Distribution Pattern and Genetic Mechanism in Northern Shaanxi |
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| Ma Li,Duan Zhonghui,He Dan,Zhou Lei,Lyu Tingting,Yan Heping,Wang Rui.Medium-Extra high Tar Yield Coal Resources Distribution Pattern and Genetic Mechanism in Northern Shaanxi[J].Coal Geology of China,2022(1). |
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| Authors: | Ma Li Duan Zhonghui He Dan Zhou Lei Lyu Tingting Yan Heping Wang Rui |
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| Institution: | (Ministry of Natural Resources Key Laboratory of Coal Resources Exploration and Comprehensive Utilization,Xi’an,Shaanxi 710021;Shaanxi Coal Geology Group Co.Ltd.,Xi’an,Shaanxi 710021;College of Geology and Environment,Xi’an University of Science and Technology,Xi’an,Shaanxi 710054) |
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| Abstract: | On the basis of data from 300 more boreholes in the Zichang mining area have studied coal physical and chemical properties of coal resources in the Triassic coalfield,northern Shaanxi.According to the“Classification for Content of Tar in Coal(MT/T 1179-2019)has carried out coal tar yield classification,and designated tar yield medium coalω(Tard)>7.0%~12%)and tar yield high coalω(Tard)>12%~15%)distribution ranges,and predicted tar yield medium-extra high resources.The paper also studied mining area main workable coal Nos.3 and 5 coal quality,sedimentary environment and degree of metamorphism etc have considered that tar yield medium-extra high coal in the area has“one low and two highs”features:i.e.high vitrinite reflectance(0.61%~0.83%),low degree of metamorphism and high volatile matter content(35.78%~45.64%),deemed that coal-forming environment and degree of metamorphism are the key factors impacting coal tar yield richness;coal tar yield of coal No.5 is slightly higher than coal No.3 in the area. |
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| Keywords: | Triassic coalfield in northern Shaanxi tar yield medium-extra high coal tar yield degree of metamorphism |
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