Comparison of coal and rock layers in Chaochuan mining area of Henan Linru Coalfield and analysis of sedimentary environment
Chaochuan mining area of Linru Coalfield is located in the southwest of Henan Province.Chaochuan mining area is located in the composite part of the Qinling latitude and the north westward structural system of Dabie Mountains,and multilayer coal seams are developed in the Cariferous-Permian strata.The occurrence of coal system strata is greatly influenced by the later structure,which in-creases the difficulty of comparison of coal rock layers in the area,and affects the exploration and development of coal resources in Cha-ochuan mining area to a certain extent.On the basis of the compilation of the field core in this study,the methods of contrast marking layers,layer spacing,coal rock layer combination characteristics and physical characteristics were adopted to compare the coal rock lay-er,and then study its sedimentary environment.The research results show that there are obvious differences in the marking layers and physical characteristics of each coal seam.The Taiyuan Formation is a marine continental mixed sediment characterized by a set of shal-low marine carbonate rocks,interbedded with terrestrial clastic rocks and coal,while the Shanxi Formation is a terrestrial clastic sedi-ment dominated by river action.The research results show that the comparison results of coal rock layers in Chaochuan mining area are reliable,and the results of sedimentary environment analysis are in line with the reality,and have reference significance for geological exploration and coal mine production in Chaochuan mining area.
Linru Coalfieldcomparison of coal rock layerssedimentary environmentcomparison of marking layersphysical characteris-tics
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