Research on the Influence of Digital Characterization of Rock Joint Contour

Abstract

Rock mass structure surface morphology characteristics have significant inflence on structural plane shear mechanical behavior. Ten BARTON standard contours were taken as the research object for image denoising and digital characterization. The statistical parameters Rp, SF and Z2 of the contours with different discrete point spacing were calculated, and then the roughness JRC of the structural surface was obtained. The rationality of the image processing method was verified by comparing the calculated values of JRC with theoretical ones, and the influence of discrete point spacing was discussed. The results show that the discrete point spacing has a great influence on JRC and statistical parameters, and different parameters have different sensitivities to discrete point spacing. The JRC value calculated by the digital representation method is in good agreement with the real JRC range. This work has a certain reference value for the study of JRC.

Keywords

• rock joints
• roughness profile index (jrc)
• discrete point spacing
• digital representation