INFLUENCE OF SURFACE ROUGHNESS ON THE FRICTION PROPERTIES OF ROCK PLANES

Abstract

FRICTION ON SEPARATION PLANES IS AN IMPORTANT FACTOR IN THE DEFORMATION OF ROCK SYSTEMS UNDER STRESS CONDITIONS. AMONG OTHER FACTORS, THE ROUGHNESS OF THE SEPARATION PLANES DETERMINES THE FRICTION PROPERTIES. DESCRIBED ARE THE TECHNIQUES USED TO RECORD THE GEOMETRICAL CHARACTRERISTICS IN FORM OF PROFILES OF THE DIFFERENT SIZE FROM HAND SPECIMEN TO A GREAT EXPOSURE. FOR THE DESCRIPTION OF SURFACE ROUGHNESS, A NEW METHOD HAS BEEN DEVELOPED, WHICH ALLOWS THAT ALL DIFFERENT SIZES OF ASPHERITIES CAN BE REPRESENTED IN ONE DIAGRAM. /AUTHOR/