Propagation of high amplitude stress waves through a filled artificial joint: An experimental study

Particle Crushing of a Filled Fracture During Compression and Its Effect on Stress Wave Propagation

“…The most concave grain size curve appeared when the maximum compressive stress ranged from 30.0 to 50.0 MPa. It was found that the variation of the particle size distribution curve was very similar to that reported by Huang et al (), where the sand bore a dynamic high compressive stress induced by a steel SHPB system.…”

“…Huang et al () found that the filled fractures with an average thickness of 2.49 mm mainly experienced a crushing and compaction stage under the stress waves shown in Figure and that compaction played the dominant role. Figure shows the variation of the transmission coefficient versus the PPV of the incident stress wave.…”

“…However, compared with the shear characteristics, the compression behavior of a filled fracture is not well understood, even though such knowledge would be of great importance when investigating the response of a filled fracture in seismic events, such as the propagation of the seismic stress wave and the dynamic weakening of a gouge‐filled fault (Li et al, ; Ma et al, ; Melosh, , ; Rokhlin & Wang, ; Xia et al, ; Zhu et al, ). As shown in Figure , when a naturally triggered or man‐made stress wave propagates through a rock mass, it always encounters multiscale filled fractures and its frequency, phase, energy, and propagation velocity are obviously changed (Blakeslee et al, ; Hamilton & Mooney, ; Huang, Qi, Williams, et al, ; Huang et al, ; Rietbrock, ). In addition to the shear characteristics, the compression behavior of the filled fracture is also crucial to model the seismic response of the filled fracture.…”

“…Xia et al, 2013;Zhu et al, 2011). As shown in Figure 1, when a naturally triggered or man-made stress wave propagates through a rock mass, it always encounters multiscale filled fractures and its frequency, phase, energy, and propagation velocity are obviously changed (Blakeslee et al, 1989;Hamilton & Mooney, 1990;Huang, Qi, Williams, et al, 2015;Huang et al, 2016;Rietbrock, 2001). In addition to the shear characteristics, the compression behavior of the filled fracture is also crucial to model the seismic response of the filled fracture.…”

“…Soil compression tests have revealed that many soil particles can be crushed alongside the compaction under high compressive stress, which significantly influences the compression behavior of the granular soil (Chuhan et al, 2003;Hagerty et al, 1993;Hendron et al, 1969;McDowell, 2002;Yamamuro et al, 1996). Recently, Huang et al (2016Huang et al ( , 2017 also found that particles in a filled fracture were crushed under high-amplitude stress waves, and this process simultaneously affected the stress wave propagation. This clearly shows that the weakening of a filled fracture during compression is closely related to the crushing of particles in granular fillings.…”