Abstract: The variability of physical and mechanical properties of various engineering geological types in the overburden and floor of coal seam No.3 in Jinshan coalfield,Shangdong Province,is studied in this paper.The Kolmogorov-mirnov tests for fitting of distribution show that the indices mainly fit logarithmic normal distribution.Moreover,the relationship among indices and the anisotropy of coal-measures rocks is preliminarily analyzed.The results are basis for probability research of coal mine engineering geology.