准格尔煤田构造特征及聚煤规律研究

The structure characterristics and Coal Accumulating Law of Zhungeer coalfield

准格尔煤田位于华北板块之鄂尔多斯盆地东北边缘,煤田总的构造轮廓为一个东部隆起,西部凹陷,走向近似南北,向西倾斜的单斜构造。本文揭示了准格尔煤田构造格局具有南北分区的基本特征,建立了5级赋煤构造单元划分方案;根据区域不整合面和区域构造应力转化面,将研究区含煤岩系划分为两个二级层序构造层序,分别对应于下部的太原组下段主体和上部的太原组—山西组;其中二级层序进一步识别出3个三级层序;揭示了含煤岩系的沉积环境,分析了准格尔煤田晚石炭—早二叠世各层序的聚煤规律,找出了各煤层富煤带中心的分布。

coalfield is located in the northeast edge of North China plate in Erdos Basin, coal total tectonic outline for an Eastern uplift, western depression, to approximately north-south, tilt westward monocline. This paper reveals the Zhungeer coalfield structure with the North-South Division basic features, the establishment of the 5 coal tectonic unit division scheme; according to the regional unconformity surface and regional tectonic stress change face, the study area coal-bearing strata are divided into two two order sequences tectonic sequence, respectively corresponding to the lower portion of the Benxi group and the main the upper section of the Taiyuan-Shanxi group; wherein the two order sequence further identified 3 three order sequences; reveals the coal-bearing strata sedimentary environment analysis of Zhungeer coalfield, the late Carboniferous-Early Permian coal accumulation law of each sequence, find out the coal seam coal rich zone center distribution.