新疆哈密三塘湖特大整装煤田中—下侏罗统煤层煤质及煤相特征
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:


Characteristics of Coal Quality and Coal Facies of Middle-Lower Jurassic Coal Seam in Large Ready Coalfield of the Santanghu Basin, Hami, Xinjiang
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    新疆哈密三塘湖盆地独特的沉积-构造背景及丰富的煤炭资源,近年来倍受煤田地质学家的重视。随着2009年三塘湖煤田勘查项目作为全国最大的整装煤田勘查区全面开工,三塘湖盆地煤炭勘查取得重大突破,截止2012年,勘探工作获得1000m以浅资源量514435630万吨,其中,中侏罗统西山窑组煤层(2~20号)煤层资源量为373927274万吨,2000m以浅资源量1200亿吨。本区主要煤层有长焰煤、不粘煤,其中以长焰煤为主,分布广泛,全区发育,不粘煤次之,具有低水分,特低-中灰分,中高-高挥发份,特低-低硫,特低-中磷,中热值-特高热值等特点。此外通过煤相特征分析得出西山窑主力煤层是由开阔水域沼泽向潮湿森林沼泽的过渡,八道湾煤大都处于潮湿森林沼泽内,凝胶化作用西山窑煤相对弱一些,植物结构保存较完整。确定了三塘湖盆地中下侏罗统沉积环境主要为湖泊—湖泊三角洲过渡相,早中侏罗世沉积古气候逐渐变为温暖潮湿,适合成煤植物大面积生长,同时中下侏罗统沉积受到较弱的构造拉张应力影响,聚煤中心表现为由汉水泉凹陷逐渐向条湖凹陷迁移的特征。

    Abstract:

    Owing to the unique sedimentary-tectonic background and abundant coal resources of the Santanghu Basin in Hami, Xinjiang, this area has attracted coal geologists' attention in the recent years. With exploration of Santanghu coal project carrying out in 2009 in the largest ready coalfield exploration area in China, main breakthrough has been achieved in the Santanghu Basin. By the end of 2012, exploration work yielded the resources amount up to 5,144,356,300 tons at the depth of 1000 m. The resources of middle Jurassic Xishanyao coal seam (2~20) amounts to 37,392,727,400 tons, the resources amount to120, 000,000,000 tons at the depth of 2000 m. The main coal seams in this area include cannel coal and non caking coal. The former is widely distributed in the whole region, and the latter is characteristics of low moisture, ultra low-middle ash, middle high-high volatile, very low-low sulfur, ultra low-middle phosphorus, middle-ultra high calorific value, etc. In addition, analysis of coal facies shows that the main coal seam of Xishanyao transited from open water marsh to wet forest marsh. While the Badaowan coal mostly was in wet forest marsh and its gelation in the Xishan Coal Mine is relatively weak, resulting in relatively complete preservation of plant structure. It is determined that the middle-lower Jurassic sedimentary environment of Santanghu Basin was mainly lake-lake delta facies and paleo-climate tended to be warm in early to Middle Jurassic. Such environment was suitable for growth of coal plant. Meanwhile, the middle-lower Jurassic deposition was effected by weak structural tension stress, with the coal accumulation center characterized by gradually migrating from Hanshuiquan Sag to Tiaohu Sag.

    参考文献
    相似文献
    引证文献
引用本文

张冀,韦波,田继军,冯烁.2015.新疆哈密三塘湖特大整装煤田中—下侏罗统煤层煤质及煤相特征[J].地质学报,89(5):917-930.
ZHANG Ji, WEI Bo, TIAN Jijun, FENG Shuo.2015. Characteristics of Coal Quality and Coal Facies of Middle-Lower Jurassic Coal Seam in Large Ready Coalfield of the Santanghu Basin, Hami, Xinjiang[J]. Acta Geologica Sinica,89(5):917-930.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2015-05-19
  • 出版日期: