The multifractal of the structural planes in rock mass of dam site area of the Yujianhe Reservoir in Guiyang

the capital Guizhou Province

is studied. The results of measurement and statistics of the structural planes in rock mass are applied to study multifractal. At first

multifractal for structural planes is studied using selected area in Area A. Different unit measure in different unit is selected to divide the studied area into squared unit mesh. And then

suitable different real number values are chosen

scale index is gotten using linear fitting method; their relation is obtained. Multifractal dimension

singular index and multifractal spectrum values are obtained using related formulae. Finally

multifractal dimension values

singular index and multifractal spectra values in other areas are obtained using the same method and contrasted. Its results show that the maximum values and average values of multifractal dimensions

singular indexes and multifractal spectra values are in Area A greatest in all selected areas. It shows that the structural planes in rock mass of Area A are complex and inhomogeneous; its engineering property and quality of rock mass are poorer. And the order of arrangement in good and poor quality is given according to the results of multifractal.