东胜煤田锡尼布拉格勘查区煤层对比
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摘要
东胜煤田锡尼布拉格勘查区主要含煤地层为中侏罗统延安组,含煤层层数较多,且钻孔间距较大,煤层对比难度较大。根据区内勘查成果结合区域资料,采用煤层组合宏观结构、沉积旋回、地震波阻抗追索、测井曲线特征、标志层、煤层间距及煤层结构对比法等综合手段进行煤层对比,使3-1、4-1、4-2、5-1、5-2主要可采煤层达到对比可靠,3-2、3-3、4-1下等次要可采煤层和不可采煤层达到对比基本可靠的程度。
Main coal-bearing strata in the Xinibulak exploration area,Dongsheng coalfield is middle Jurassic Yanan formation,with many coal seams,larger interval between boreholes,thus coal seams correlation is rather difficult.Based on the exploration data in the area combined with regional information,carried out coal seams correlation through integrated means of coal seam assembled macrostructures,sedimentary cycle,seismic wave impedance tracing,logging traces characteristics,marker beds,interval between coal seams and coal seam structural correlation,thus made the correlation of main mineable coal seams Nos.3-1,4-1,4-2,5-1 and 5-2 reliable,correlation of non essential and non mineable coal seams Nos.3-2,3-3 and 4-1L basically reliable.
Main coal-bearing strata in the Xinibulak exploration area,Dongsheng coalfield is middle Jurassic Yanan formation,with many coal seams,larger interval between boreholes,thus coal seams correlation is rather difficult.Based on the exploration data in the area combined with regional information,carried out coal seams correlation through integrated means of coal seam assembled macrostructures,sedimentary cycle,seismic wave impedance tracing,logging traces characteristics,marker beds,interval between coal seams and coal seam structural correlation,thus made the correlation of main mineable coal seams Nos.3-1,4-1,4-2,5-1 and 5-2 reliable,correlation of non essential and non mineable coal seams Nos.3-2,3-3 and 4-1L basically reliable.
引文
[1]石彦强.内蒙古自治区东胜煤田锡尼布拉格勘查区煤炭普查报告[R].2011.
[2]刘波.基准面旋回与沉积旋回的对比方法探讨[J].沉积学报,2002,20(1):112-117.
[2]刘波.基准面旋回与沉积旋回的对比方法探讨[J].沉积学报,2002,20(1):112-117.
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