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通过分析大城煤田勘查区资料,系统总结了该区煤层赋存规律及其影响因素.该区煤系含煤系数变化规律为中部太原组最大,上部山西组居中、本溪组最小,由本溪组至太原组、山西组,聚煤作用由弱至强,再由强变弱.从10号煤层到5号煤层聚煤中心具有继承性.自下而上,煤系沉积环境由滨岸陆棚、滨岸陆棚转为三角洲环境.同一煤层在平面上的厚度变化是聚煤的微环境不同造成的.“,”By analyzing relevant data of Dacheng coalfield exploration area, the occurrence regularity and influencing factors of the coal was summarized. Among coal coal bearing coefficient variation, Taiyuan group was the largest, central upper center shanxi group, Benxi group smallest, groups from Taiyuan, Shanxi group to Benxi coal accumulating effect from weak to strong, strong by the weak again. From No. 10 coal seam to the No. 5 coal seam coal accumulating center had the inheritance. From bottom to top, the sedimentary environment of coal measures changed from the coastal shelf, coastal shelf to delta environment. The thickness of the same coal seam in the plane change was caused by coal accumulating environment are different.