| 霍高普,薛喜成,李焕同,郭亚龙.韦一井田山西组煤层煤质特征及成煤环境分析[J].矿产勘查,2025,16(S2):70-75 |
| 韦一井田山西组煤层煤质特征及成煤环境分析 |
| Analysis on coal quality characteristics and coal-forming environment of Shanxi Group coal seam in Weiyi mine field |
| 投稿时间：2023-05-13 |
| DOI：10.20008/j.kckc.2025s2011 |
| 中文关键词: 韦一井田 山西组 煤系地层 煤岩煤质 成煤环境 |
| 英文关键词: Weiyi wellfield Shanxi group coal measures strata coal rock coal quality coal-forming environ. men |
| 基金项目:本文受国家自然科学基金项目(41502160)与陕西省自然科学基础研究计划项目(2019YQ2-08)联合资助。 |
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| 中文摘要: |
| 韦一井田位于宁东煤田韦州矿区中部，目前尚未开发利用，为了探讨该区山西组煤岩煤质与成煤环境的关系，本文从井田内煤岩煤质及地球化学特征入手，主要分析了各可采煤层灰分、硫分、镜/惰比、酸/碱值等指标，探讨了该指标对成煤环境的指示意义。研究表明:山西组各可采煤层属于低灰、低硫的中等煤化度烟煤；成煤期覆水性、酸/碱值在垂向上的趋势为先减小后增大， St，d值则相反；各可采煤层属潟湖相聚煤环境，聚煤作用受控于古地形、古气候。 |
| 英文摘要: |
| Weiyi wellfield is located in the middle of The Weizhou Mining Area of Ningdong Coalfield，which has not yet been developed and utilized，in order to explore the relationship between coal rock coal quality and coal-forming environment of the Shanxi Formation in this area，this paper starts from the coal rock coal quality and geochemical characteristics of coal rock in the wellfield，mainly analyzes the ash，sulfur，mirror/inert ratio，acid/ alkali value and other indicators of the recoverable coal seam，and analyzes and discusses the indicative significance of this index on the coal-forming environment. The results show that the recoverable coal seams in theShanxi Formation belong to the medium coal-based bituminous coal with low ash ash and low sulfur；The tendency of water-cover and acid/base value in the vertical upward trend of the coal-forming period is to decrease first and then increase，and the St and d values are the opposite；Each recoverable coal seam belongs to the coal environ. ment of the Lagoon，and the coal gathering effect is controlled by the paleotopic terrain and paleoclimate。 |
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