The influence of Shanxi Formation sedimentary environment in No.2 Coal Mine of Pingdingshan

Abstract：In No.2 Coal Mine of Pingdingshan, the sedimentary environment of the lower stratum of Shanxi formation is considered as the tidal plat and the upper stratum and the result of delta systems.The constitute of sedimentary deposit in different sedimentary environments has dissimilar compression rate, the nonuniform compaction action is evident and affects the development of the peat bog.The certain relationship of sedimentary environment and the changes of coal bed ply is testified.

Keyword：sedimentary environment;tidal plat;delta systems;the changes of the thickness of the coal seams;