通过分析本井田含煤岩系地层沉积环境,可以得出本井田的聚煤规律。4号煤层属于丰予井田可采的稳定煤层之一,煤厚总体呈西北厚,东南薄的变化趋势,分析4号煤层的赋存状态及变化规律,对该煤层的勘探开采具有实际意义。 By analyzing the sedimentary environment of coal-bearing rock strata in this field, we can draw the law of coal accumulation in this field. Coal seam 4 belongs to one of the recoverable stable coal seams in Fengjiu Minefield. The thickness of coal seam generally shows the trend of northwest thickness and southeast thinness. Analyzing the occurrence state and variation rule of No.4 coal seam is of practical significance to exploration and exploitation of this coal seam.