Abstract: The sedimentary environment is the fundamental factor influencing changes in coal seam thickness, distribution, roof stability, and coal quality. Through statistical analysis of the lithology, structure, and coal seams of five rock sections in the coal-bearing strata revealed by 67 exploration boreholes in the Zhuanlongwan minefield, the sedimentary environment of each rock section in the coal-bearing strata was studied by considering key factors directly related to sedimentation, such as the percentage of sandstone thickness to the total thickness of each rock section and changes in sedimentary thickness. Based on the analysis of the sedimentary environment, the distribution pattern of coal seams and the variation pattern of coal seam partings within the minefield were studied. Using sandstone content as a key parameter controlling coal accumulation, areas with sandstone content less than 40% in the southern part of the minefield were identified as favorable coal-forming areas. The variation pattern of coal seam thickness gradually increasing from south to north was predicted, and the distribution areas of coal seam partings were delineated, providing important practical guidance for mine production.