Effects of Particle Size on Fault Gouge Frictional Characteristics and Associated Acoustic Emission

Table 1

The parameters of four experimental setups.

Samples number	Normal stresses (MPa)	Particle size (m)	Shear velocity (m/s)
Sample 1	2	23	5
Sample 2	2	23	2
Sample 3	2	8.5	2
Sample 4	2	106	5