DYNAMIC FRICTION OF ROCK-ON-ROCK SLIDING

摘要

Employing pressure-shear impact with light gas gun equipment,series of rapid-slip experiments for rock-on-rock sliding were conducted in the present paper.Among then,the interracial normal pressures ranges from 0.1 to 1.4GPa and the ultimate sliding speeds are approximately 10-50m/s.The results show some interesting phenomena for shear resistance changing with the increasing and decreasing of the normal pressure in the same impact process.It is helpful for the understanding of shear strength weakening during the earthquake slip.