古交区块8号煤层构造煤分布及成因分析

发布时间：2018-06-05 04:22

本文选题：煤体结构 + 古交区块　；参考：《煤炭工程》2017年12期

【摘要】：基于山西古交区块主采煤层地质背景,选取太原西山古交区块5口钻井作为测井识别煤体结构的刻度井,集成自然伽马、密度、电阻率、声波时差测井响应,识别了区内31口钻井煤体结构。计算各钻井碎粒煤~糜棱煤所占厚度比值,采用matlab软件计算和分析了影响碎粒煤~糜棱煤层域分布因素的总灰色关联度。结果表明,影响其层域分布的因素依次为夹矸厚度、煤层厚度、夹矸层数、煤层倾角等。此外对碎粒煤~糜棱煤区域分布控制因素进行了探讨,认为向斜翼部受透入性顺层剪切应力作用影响,碎粒煤~糜棱煤普遍发育,NE向正断层尖灭端控制了碎粒煤~糜棱煤局域分布。这些煤体结构层域和区域控制因素存在内在联系,并非相互孤立。
[Abstract]:Based on the geological background of main mining seam in Gujiao block of Shanxi Province, five wells in Xijiao block, Taiyuan, are selected as calibration wells for logging identification of coal body structure, which integrate natural gamma, density, resistivity and acoustic moveout logging response. The coal structure of 31 drilling wells in the area was identified. In order to calculate the ratio of the thickness of granular coal to mylonian coal in each drilling well, the total grey correlation degree of the factors affecting the distribution of coal seam region between granular coal and surige coal seam is calculated and analyzed by matlab software. The results show that the factors influencing the distribution of coal layer are the thickness of gangue, the thickness of coal seam, the number of gangue layers, the inclination of coal seam and so on. In addition, the controlling factors of the regional distribution between granular coal and bristle coal are discussed. It is considered that the syncline wing is affected by the permeable bedding shear stress. NE-trending to the tip of the normal fault control the local distribution of the pulverized coal to the bristle coal. These coal structure layers and regional control factors have internal relations and are not isolated from each other.
【作者单位】：中国矿业大学煤层气资源与成藏过程教育部重点实验室;河南工程学院资源与环境工程学院;
【基金】：山西省煤层气联合基金资助项目(2012012001) 国家科技重大专项资助项目(2011ZX05034-004)
【分类号】：TD163.1

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