新柏井田延安组煤层聚煤特征研究
发布时间：2018-11-11 17:00
【摘要】：新柏井田位于六盘山东侧和陇东黄土高原之间,安口—新窑煤田东部。含煤地层为侏罗系中统延安组,煤层赋存稳定,厚度较大,资源储量集中,煤质优良,属于低灰、特低硫、中高挥发分、中高热值的不粘煤,可作为气化用煤和化工用煤。新柏井田以往地质勘查程度较低,良好的煤炭资源优势未能得到合理的开发和利用。因此,对新柏井田聚煤特征的研究十分必要,对煤炭的合理综合利用、煤田的开发建设等都有重大的理论和现实意义。本文通过分析已有的区域地质资料,应用聚煤盆地构造分析法,结合沉积学、岩石学、煤地质学、构造地质学和层序地层学等学科理论,结合实际情况对新柏井田含煤地层煤的煤岩学特性、煤层及其赋存特征、聚煤环境等进行分析研究,进而总结出聚煤特征。新柏井田含煤地层聚煤作用主要发生在河流沉积体系和湖泊三角洲沉积体系。河流沉积体系在延安组的下部及上部发育,冲积平原分布广泛,多期稳定的泥炭沼泽发育,最终形成煤6组、煤5组和煤1组;湖泊三角洲沉积体系在延安组中部发育,大面积三角洲平原上发育多期泥炭沼泽,最终形成煤4组、煤3组和煤2组。受古气候、古植物、古地理和古构造的共同作用,新柏井田沉煤期经历从发展期到鼎盛期再到稳定期,最后衰退消亡的过程。
[Abstract]:Xinbo mine is located between the east of Liupanshan and the Loess Plateau of Longdong, and the east of Ankou-Xinyao coalfield. The coal-bearing strata are the Yanan formation of the Middle Jurassic system, with stable coal beds, large thickness, concentrated resources and good coal quality. They belong to non-caking coal with low ash, very low sulfur, medium and high volatile matter and medium and high calorific value, and can be used as gasification coal and chemical coal. The degree of geological exploration in Xinpai mine field is low in the past, and the advantages of good coal resources can not be developed and utilized reasonably. Therefore, it is necessary to study the characteristics of coal accumulation in Xinpai mine field. It is of great theoretical and practical significance to the rational comprehensive utilization of coal and the development and construction of coal field. Based on the analysis of the existing regional geological data, the authors apply the structural analysis method of coal-accumulating basins, combining with the theories of sedimentology, petrology, coal geology, tectonic geology and sequence stratigraphy, etc. Combined with the actual situation, the coal petrology characteristics, coal seam and its occurrence characteristics and coal accumulation environment of coal bearing strata in Xinbo mine field are analyzed and studied, and the characteristics of coal accumulation are summed up. Coal accumulation in coal bearing strata in Xinbo mine field mainly occurs in fluvial sedimentary system and lacustrine delta sedimentary system. The fluvial sedimentary system developed in the lower and upper parts of Yan'an formation, and the alluvial plain was widely distributed, and the peat swamps developed steadily in many periods, and finally formed 6 groups of coal, 5 groups of coal and 1 group of coal. The lacustrine delta sedimentary system developed in the middle of Yan'an formation, and the peat swamps developed on the large delta plain, and finally formed 4 groups of coal, 3 groups of coal and 2 groups of coal. Influenced by paleoclimate paleogeography and paleotectonics the coal sinking period of Xinpai mine field experienced the process from development period to peak period to stable period and finally declined and died out.
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.11
本文编号：2325539
[Abstract]:Xinbo mine is located between the east of Liupanshan and the Loess Plateau of Longdong, and the east of Ankou-Xinyao coalfield. The coal-bearing strata are the Yanan formation of the Middle Jurassic system, with stable coal beds, large thickness, concentrated resources and good coal quality. They belong to non-caking coal with low ash, very low sulfur, medium and high volatile matter and medium and high calorific value, and can be used as gasification coal and chemical coal. The degree of geological exploration in Xinpai mine field is low in the past, and the advantages of good coal resources can not be developed and utilized reasonably. Therefore, it is necessary to study the characteristics of coal accumulation in Xinpai mine field. It is of great theoretical and practical significance to the rational comprehensive utilization of coal and the development and construction of coal field. Based on the analysis of the existing regional geological data, the authors apply the structural analysis method of coal-accumulating basins, combining with the theories of sedimentology, petrology, coal geology, tectonic geology and sequence stratigraphy, etc. Combined with the actual situation, the coal petrology characteristics, coal seam and its occurrence characteristics and coal accumulation environment of coal bearing strata in Xinbo mine field are analyzed and studied, and the characteristics of coal accumulation are summed up. Coal accumulation in coal bearing strata in Xinbo mine field mainly occurs in fluvial sedimentary system and lacustrine delta sedimentary system. The fluvial sedimentary system developed in the lower and upper parts of Yan'an formation, and the alluvial plain was widely distributed, and the peat swamps developed steadily in many periods, and finally formed 6 groups of coal, 5 groups of coal and 1 group of coal. The lacustrine delta sedimentary system developed in the middle of Yan'an formation, and the peat swamps developed on the large delta plain, and finally formed 4 groups of coal, 3 groups of coal and 2 groups of coal. Influenced by paleoclimate paleogeography and paleotectonics the coal sinking period of Xinpai mine field experienced the process from development period to peak period to stable period and finally declined and died out.
【学位授予单位】：河北工程大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.11
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