Abstract: This paper introduces the basic principle of the application of the ordinary Kriging method in estimation of the wave velocity and its space variation characteristic of the rock mass. The probabilistic distribution of the rock mass wave velocity are statistically studied. The wave velocity of the rock mass are three dimensionally interpolated by using the GOCAD software so that the space variation of the wave velocity in the rock mass are obtained. The results indicate that the rock mass wave velocity has some medium to weak space variation. The three dimensional visualization of the wave velocity in the rock mass can provide quantitative and visual solutions for the geological material and can also improve the accuracy of the engineering geology analysis.

Key words: Rock Mass Wave Velocity, Spatial Variability, Ordinary Kriging Method； 3D Visualization, Quantitative Evaluation