Fig 1.
Incident P wave upon a rock mass with a set of parallel filled joints.
Fig 2.
Filled joint model.
Fig 3.
Schematic view of the displacement at the filled joint.
(a) Continuity (b) Discontinuity.
Fig 4.
Relationship between normal stress and closure (a single filled joint).
Fig 5.
Equivalent normal stiffness of filled joint.
Fig 6.
SHRB device.
Fig 7.
Filling material between the incident and transmitted rock bar.
Fig 8.
(a) quartz sand (b) kaolin clay.
Fig 9.
Schematic diagram of the wave separation in rock bar.
Fig 10.
The strain time history at gauge 1 and 2 (52.0 GPa/s).
Fig 11.
Stress time history curve in the bar with a single joint.
Fig 12.
Stress time history curves in the bar with two joints (d1 = d2 = 3 mm).
Fig 13.
Stress-closure relationship at different loading rates (d = 3 mm).
(a) quartz sand (b) mixture (c) kaolin clay.
Fig 14.
Variation of the joint specific stiffness with the loading rate.
Fig 15.
Variation of the transmission coefficient with the joint specific stiffness.
(a) 22.2 GPa/s (b) 34.5 GPa/s (c) 52.0 GPa/s.
Fig 16.
Stress-closure relationship of filled joints with various loading rates.
(a) quartz sand (b) mixture (c) kaolin clay.
Fig 17.
Variation of joint specific stiffness with the loading rate.
Fig 18.
Variation of transmission coefficient with the loading rate.
(a) quartz sand (b) mixture (c) kaolin clay.
Fig 19.
Time-history curves of particle velocity of transmitted waves under different joint widths.
(a) quartz sand (b) mixture (c) kaolin clay.
Fig 20.
Time-history curves of particle velocity of transmitted waves (quartz sand).
(a) d1 = d2 = 3 mm (b) d1 = 3 mm, d2 = 5 mm (c) d1 = 5 mm, d2 = 3 mm.