关键词: 非均匀变形, 蠕滑, 黏滑, 滑动速度, 位移场, 变形能密度

Abstract: Based on the non-uniform characteristics of rock friction and sliding deformation field, the friction and sliding laws of creep-slip and stick-slip were studied, respectively. By means of double-sided friction model experiment, using digital speckle correlation method as the observation method, the evolution and laws of the displacement field contour, the non-uniform statistics of the deformation field, the deformation energy density and the sliding velocity of the sliding surface in the processes of creep-slip and stick-slip deformation of rock were studied respectively. The results showed that: the distribution of contours in the surrounding rock displacement field could better reflect the characteristics of sliding surface resistance, in which the contours in the strong resistance sliding area were arch-shaped and distributed sparsely, while the contours in the weak resistance sliding area were parallel and distributed densely. In the creep-slip process of rock, the non-uniform statistics showed the characteristic of fluctuation growth, while in the stick-slip process of rock, the non-uniform statistics showed the characteristic of mutation and jump. In the creep-slip process of rock, the sliding speeds in different areas were in alternating state of acceleration and deceleration. In the stick-slip process of rock, the sliding velocities in different areas were abrupt. In the creep-slip process of rock, the deformation energy densities in different areas were all in the fluctuation state of accumulation and release, while the deformation energy densities in different areas in the process of stick-slip were abrupt.

Key words: non-uniform deformation, creep-slip, stick-slip, sliding speed, displacement field, deformation energy density