【摘要】：新柏井田位于六盤山東側(cè)和隴東黃土高原之間,安口—新窯煤田東部。含煤地層為侏羅系中統(tǒng)延安組,煤層賦存穩(wěn)定,厚度較大,資源儲(chǔ)量集中,煤質(zhì)優(yōu)良,屬于低灰、特低硫、中高揮發(fā)分、中高熱值的不粘煤,可作為氣化用煤和化工用煤。新柏井田以往地質(zhì)勘查程度較低,良好的煤炭資源優(yōu)勢(shì)未能得到合理的開發(fā)和利用。因此,對(duì)新柏井田聚煤特征的研究十分必要,對(duì)煤炭的合理綜合利用、煤田的開發(fā)建設(shè)等都有重大的理論和現(xiàn)實(shí)意義。本文通過(guò)分析已有的區(qū)域地質(zhì)資料,應(yīng)用聚煤盆地構(gòu)造分析法,結(jié)合沉積學(xué)、巖石學(xué)、煤地質(zhì)學(xué)、構(gòu)造地質(zhì)學(xué)和層序地層學(xué)等學(xué)科理論,結(jié)合實(shí)際情況對(duì)新柏井田含煤地層煤的煤巖學(xué)特性、煤層及其賦存特征、聚煤環(huán)境等進(jìn)行分析研究,進(jìn)而總結(jié)出聚煤特征。新柏井田含煤地層聚煤作用主要發(fā)生在河流沉積體系和湖泊三角洲沉積體系。河流沉積體系在延安組的下部及上部發(fā)育,沖積平原分布廣泛,多期穩(wěn)定的泥炭沼澤發(fā)育,最終形成煤6組、煤5組和煤1組;湖泊三角洲沉積體系在延安組中部發(fā)育,大面積三角洲平原上發(fā)育多期泥炭沼澤,最終形成煤4組、煤3組和煤2組。受古氣候、古植物、古地理和古構(gòu)造的共同作用,新柏井田沉煤期經(jīng)歷從發(fā)展期到鼎盛期再到穩(wěn)定期,最后衰退消亡的過(guò)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.
【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P618.11

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