陕西煤炭2026，Vol.45Issue(10)：8-15,8.DOI:10.20120/j.cnki.issn.1671-749x.2026.1002
红一井田5号煤层泥炭沼泽环境演化及其煤岩、煤质响应研究
Evolution of peat swamp environment of No.5 coal seam in Hongyi mine field and response of coal petrology and quality
摘要
Abstract
Taking No.5 coal seam in Hongyi mine field of Ningxia as the research object,this study combined channel sampling with experimental analysis,comprehensively employing coal petrology,coal quality analysis,and coal facies indices such as GI-TPI,GWI-VI,and T-D-F diagrams,to systematically investigate the evolutionary characteristics of the peat swamp environment during the coal-forming period of No.5 coal seam and its control over coal petrology and quality.The results show that No.5 coal seam is a medium-ash,high-volatile,medium-sulfur gas coal.The peat swamp environment underwent a three-stage evolutionary process of"extremely wet reducing → dry oxidizing → extremely wet reducing".The vertical evolution pattern is significantly correlated with parameters such as the vitrinite/inertinite ratio(V/I),gelification index(GI),and groundwater influential index(GWI),revealing the critical control of water-cover conditions and redox environment on maceral differentiation and on sulfur content,ash yield,and volatile matter,providing a theoretical basis for guiding the clean and efficient utilization of coal.关键词
山西组/泥炭沼泽/煤岩/煤质/煤炭清洁高效利用Key words
Shanxi Formation/peat swamp/coal petrology/coal quality/coal clean and efficient utilization分类
天文与地球科学引用本文复制引用
马少东,姬晓燕,樊发旺,夏娟,孙佳..红一井田5号煤层泥炭沼泽环境演化及其煤岩、煤质响应研究[J].陕西煤炭,2026,45(10):8-15,8.基金项目
宁夏2023年自治区财政地质资源勘探专项项目(项目编号:640000233000000011005) （项目编号:640000233000000011005）
