宁夏韦州矿区新发勘查区煤岩层对比

Coal Seams and Strata Correlations in Xinfa Exploration Area,Weizhou Mine Area,Ningxia

宁夏韦州矿区新发勘查区位于鄂尔多斯地块西缘拗陷带韦州向斜东翼北部,整体为一向西倾斜的单斜构造,主要含煤地层为太原组和山西组,其中太原组最大揭露厚度为480m,含煤57层,可采7层;山西组含煤20层,可采4层。采用标志层法、层间距法、煤岩性组合特征法及物性特征法多种方法对勘查区山西组和太原组进行了系统的划分和对比,认为区内十二煤、十六煤为全区可采煤层;一煤、二煤、四煤、九煤、十四煤、十七煤为大部分可采煤层;三煤、十煤、二十煤为局部可采煤层,并对含煤地层及煤层的空间展布规律进行了分析,其结果对以后生产设计具有现实意义。

The Xinfa exploration area, Weizhou mine area, Ningxia is situated on the northern part of east limb, Weizhou syncline, west margin depressed belt of the Ordos platform, on the whole is a monocline dipping west. Main coal-bearing strata are the Taiyuan and Shanxi formations. Maximum revealed thickness of Taiyuan Formation is 480m, contains 57 coal seams, in which 7 mineable; Shanxi Formation contains 20 coal seams, 4 mineable. Using marker bed, interval, coal and lithologic combination features and physical property features etc. multiple methods carried out division and correlation of coal seams in the two formations in the area. Considered that coal seams Nos.12 and 16 are whole area mineable; Nos.1, 2, 4, 9, 14 and 17 most part mineable; Nos.3, 10 and 20 locally mineable. Meanwhile, carried out analysis of coal-bearing strata and coal seam spatial extending pattern; and the result has practical significance in production design henceforth.