山西薄煤层地层分布特征研究

Study on Thin Coal Seam Stratigraphic Distribution Features in Shanxi Province

以山西薄煤层为研究对象,分析研究了山西六大煤田中薄煤层的分布特征,得知六大煤田中大同煤田薄煤层数量最多,其次为霍西煤田和沁水煤田,西山煤田薄煤层数最少。沁水煤田灵石矿区、沁源北、左权矿区薄煤层层次比大于80%。山西薄煤层以0.8~1.3m厚度为主;大同煤田薄煤层总厚最高,西山煤田最小。霍西煤田薄煤层厚度占比最高,西山煤田薄煤层厚度占比最小。小于0.8m薄煤层总厚度均小于0.8~1.3m薄煤层总厚度。山西组含煤岩系以0.8~1.3m薄煤层为主,占山西组薄煤层总数的71.4%。太原组和大同组含煤岩系中小于0.8m薄煤层层数和0.8~1.3m薄煤层层数相当。太原组薄煤层数最多,分别占全省薄煤层总层数的60%和总厚度的58%。

Taking the thin coal seams in Shanxi Province as subject investigated has analyzed thin coal seam distribution features in 6 major coalfields in the province.The result has shown that the number of thin coal seams in the Datong coalfield is the most,Huoxi and Qinshui coalfields the second,Xishan coalfield the least.The thin coal seam ratio of the Lingshi,Qinyuan north and Zuoquan mining areas in Qinshui coalfield is above 80%.The thickness of thin coal seams in Shanxi is mainly 0.8~1.3m.Total thickness of thin coal seams in Datong coalfield is the largest,in Xishan coalfield the smallest.Thin coal seam ratio in Huoxi coalfield is the highest,Xishan coalfield the least.Total thicknesses of thin coal seam less than 0.8m are all less than total thicknesses of thin coal seam between 0.8~1.3m.In the Shanxi Formation coal measures,thin coal seam is mainly 0.8~1.3m,71.4%of total thin coal seams.While in coal measures of the Taiyuan and Datong formations,numbers of thin coal seam less than 0.8m and between 0.8~1.3m are roughly equal.The number of thin coal seams in Taiyuan Formation is the most,60%of thin coal seam total number,and 58%of total thickness in the province respectively.