陇东地区刘园子井田煤层对比特征
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摘要
煤层对比研究是煤炭资源勘探、矿井采掘过程中重要的地质工作.本文以陇东地区刘园子井田煤层为研究对象,在综合刘园子井田地质构造和沉积环境的基础上,从煤层厚度分布、煤层结构、煤层层间距、岩性岩相-沉积旋回及煤层层位、可采煤层煤质5个方面对井田内的煤层进行对比分析.结果表明:刘园子井田可采煤层皆具有向斜中心较厚,外围较薄,北部较厚,南部较薄的变化规律,多为厚-特厚煤层,煤层结构较易辨别对比,煤层层间距存在明显的差异;岩性岩相上存在上细下粗的粒度组合形式;可采煤层的煤质具有明显差异及变化规律.这对有效追踪煤层在层序地层中位置的变化情况,为陇东地区煤炭资源的勘查开发提供指导和借鉴具有重要意义.
Coal seam comparative study is an importantly geological work in coal resource exploration and mine excavation. This paper,taking the Liuyuanzi coal field of Longdong region as the research object and taking the comprehensive geological structure and sedimentary environment into consideration,the coal seam in the field is compared and analyzed from the five aspects,namely distribution of coal seam thickness,coal seam spacing,lithologic lithofacies sedimentary cycle and coal seam horizon,and coal quality in recoverable coal seam. Results show that the coal seams in Liuyuanzi are thicker in the oblique center,thinner in the periphery; thicker in the north and thinner in the south,and mostly thick-to-thick coal seams,the structure of coal seam easier to distinguish and the difference of coal seam spacing is obvious. Lithology,lithofacies with coarse and fine particle size combinations,there are obvious differences and changing rules of coal quality in recoverable coal seam. This has laid the basis for effectively tracking the changes in the position of the coal seam in the sequence stratigraphy,which is of great significance to plan and guide the exploration and development of coal resources in Longdong region.
Coal seam comparative study is an importantly geological work in coal resource exploration and mine excavation. This paper,taking the Liuyuanzi coal field of Longdong region as the research object and taking the comprehensive geological structure and sedimentary environment into consideration,the coal seam in the field is compared and analyzed from the five aspects,namely distribution of coal seam thickness,coal seam spacing,lithologic lithofacies sedimentary cycle and coal seam horizon,and coal quality in recoverable coal seam. Results show that the coal seams in Liuyuanzi are thicker in the oblique center,thinner in the periphery; thicker in the north and thinner in the south,and mostly thick-to-thick coal seams,the structure of coal seam easier to distinguish and the difference of coal seam spacing is obvious. Lithology,lithofacies with coarse and fine particle size combinations,there are obvious differences and changing rules of coal quality in recoverable coal seam. This has laid the basis for effectively tracking the changes in the position of the coal seam in the sequence stratigraphy,which is of great significance to plan and guide the exploration and development of coal resources in Longdong region.
引文
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[2]庞世臣,宋萍.红会一矿煤层对比分析及主要标志层的确定[J].西安科技学院学报,2000,20(4):304-306.
[3]张震.复杂井田的煤层对比方法分析[J].科技与企业,2013(24):201.
[4]李志伟.煤层对比方法综合性分析[J].山东煤炭科技,2014(2):132-134.
[5]张晓波,张祥.煤层对比方法分析[J].河北煤炭,2011(1):6-7.
[6]石彦强,邢立杰,薛鲜群.东胜煤田锡尼布拉格勘查区煤层对比[J].中国煤炭地质,2012,24(8):16-22.
[7]何光强.煤田地质勘查中煤层对比方法的探讨[J].煤炭科学技术,2009,37(6):106-109.
[8]常红梅.河南焦作煤田程村井田岩、煤层对比方法[J].江苏地质,2007,31(4):315-318.
[9]任晓明.陇东地区煤炭资源赋存规律及勘查方向探讨[J].煤,2012,21(7):44-46.
[10]马永辉.甘肃环县西部地质构造及控煤作用[J].煤田地质与勘探,2010,38(4):12-15.
[11]宋宝德.甘肃刘园子矿区矿井涌水量预测研究[D].西安:长安大学,2012.
[12]宿敬北,何静.陇东环县沙井子矿区煤系与聚煤作用[J].山东工业技术,2013(13):145-146.
[13]黄平华,宁超.新安煤田正村井田二叠系煤岩层对比[J].煤田地质与勘探,2001,23(3):183-186.
[14]陈良立,乐志军,刘永峰.禹州煤田梁北一号井田煤岩层对比分析[J].能源技术与管理,2013,38(1):15-17.