• 论文
主办单位:煤炭科学研究总院有限公司、中国煤炭学会学术期刊工作委员会
陕北中鸡南部2号煤组赋存特征及沉积解释
  • Title

    Deposition features and sedimentary explanation of No. 2 seam group in south Zhongji of northern Shaanxi

  • 作者

    李明培苗霖田王东东李静琴

  • Author

    Li Mingpei Miao Lintian Wang Dongdong Li Jingqin

  • 单位

    陕西煤田地质勘查研究院有限公司陕西能源集团研究院国土资源部煤炭资源勘查与综合利用重点实验室山东科技大学

  • Organization
    Shaanxi Coal Geological Exploration Insttute Company Limited Shaanxi Energy Group Research Institute MLRKey Lab of Coal Resource Survey and Comprehensive Uilization Shandong University of Science and Technology
  • 摘要
    为揭示中鸡南勘查区2号煤组的复合—分叉—复合的成因机理及聚煤规律,以沉积学的理论为指导,采用煤岩层对比和岩相古地理恢复的方法,对2号煤组的空间展布、聚煤规律进行研究。结果表明:研究区西部和东部2号煤组复合为2-2煤,中部—中东部分叉为2层局部可采的2-2和2-2下煤层;2号煤组沉积期岩相古地理展布表明西部和东部煤层复合区主要位于三角洲平原相区,中部—中东部的分叉区主要位于三角洲前缘和滨湖相区,煤层厚度、复合—分叉—复合特征受控于煤层沉积时期可容空间增长速率与泥炭堆积速率之间的平衡性;通过聚煤规律和周边煤炭勘探开发现状分析,认为研究区西侧的2-2煤层具有较大的资源潜力,是将来扩大勘查工作的潜在目标区。
  • Abstract
    in orderto reveal the compositon- bfurcation-composition formaton mechanism and coal accurulaton law of No. 2 seam group in South Zhongi survey Block with the sedimenolgy theory as the guidance,the cal and rock comparison and te ltofacies and palecgeography restoration metnod were applied to the study on the spatald str utin and the coalacumulatin law of N0o. 2 seam group.The resuts shcwed that No.2seam compostton at the west part and east part of the study block was named as No.2*seam and the bifurcation at the midele mnidle east par ofthe study block would have two local mineable seams as Nvo. 2 'seam and N0.2*covseam. T he sedimentary period litnfces and paleogeograplhy ditriution in No. 2 sean group showed that thecomostion block in the west part and east part ofthe seam w s mainly lcated in the delaplain facies zone the bfucatio t the midle and midle east partof the sean was mainly located at the delta leading edge and the shore lake facies and the thickness of the sean was thick.The composition-ificationcompostion features were controld by the balance between the accommodation space growh rate and the peat accurulation rate in the seam sedimentary percd. with the analysis on the coal acurulaton lav and the surounding coal exploration and developmen statos the paer hed that No. 2-seam at the west side of the study area would have a high resource potential and would be the potential target area of the late expanded survey work.
  • 关键词

    煤层对比沉积环境泥炭堆积速率聚煤规律延安组

  • KeyWords

    seam comparison;, sedimentary environment; peat accumulation rate; coal accumulation law, Yan'an Formation:

  • 基金项目(Foundation)
    国家自然科学基金资助项目(41402086);陕西省地质勘查基金资助项目(61200901001);山东科技大学人才引进科研启动基金资助项目(2013RCJJ008);
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