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Non-attenuation Behavior of Stress Wave Propagation Through a Rock Mass
https://orcid.org/0000-0002-7744-692X
Abstract The propagation properties of stress waves in rock masses are of great importance for exploring the internal structure of the Earth and avoiding earthquake disasters. Based on the modified displacement discontinuity method, the non-attenuation behavior of stress wave propagation through a rock mass with a large wave impedance to a rock mass with a small wave impedance was studied. The results show that the non-attenuation propagation of stress waves can occur when stress waves propagate from rock with a large wave impedance to rock with a small wave impedance. The non-attenuation propagation of stress waves is related to the incident wave frequency, the joint stiffness and the wave impedance ratio. The non-attenuation propagation of stress waves is most likely to occur when the incident wave frequency is low and the joint stiffness and wave impedance ratio are large. According to the critical condition for the non-attenuation propagation of stress waves, a threshold surface was identified. The region corresponding to non-attenuation stress wave propagation exists below the threshold surface.
Highlights Non-attenuation behavior of stress wave propagation through a rock mass was explored.Effects of frequency, joint stiffness and wave impedance ratio on non-attenuation behavior was investigated.A threshold surface for non-attenuation behavior in the FKN space (frequency f0, joint stiffness kn and wave impedance ratio n) was identified.
Non-attenuation Behavior of Stress Wave Propagation Through a Rock Mass
https://orcid.org/0000-0002-7744-692X
Abstract The propagation properties of stress waves in rock masses are of great importance for exploring the internal structure of the Earth and avoiding earthquake disasters. Based on the modified displacement discontinuity method, the non-attenuation behavior of stress wave propagation through a rock mass with a large wave impedance to a rock mass with a small wave impedance was studied. The results show that the non-attenuation propagation of stress waves can occur when stress waves propagate from rock with a large wave impedance to rock with a small wave impedance. The non-attenuation propagation of stress waves is related to the incident wave frequency, the joint stiffness and the wave impedance ratio. The non-attenuation propagation of stress waves is most likely to occur when the incident wave frequency is low and the joint stiffness and wave impedance ratio are large. According to the critical condition for the non-attenuation propagation of stress waves, a threshold surface was identified. The region corresponding to non-attenuation stress wave propagation exists below the threshold surface.
Highlights Non-attenuation behavior of stress wave propagation through a rock mass was explored.Effects of frequency, joint stiffness and wave impedance ratio on non-attenuation behavior was investigated.A threshold surface for non-attenuation behavior in the FKN space (frequency f0, joint stiffness kn and wave impedance ratio n) was identified.
Non-attenuation Behavior of Stress Wave Propagation Through a Rock Mass
https://orcid.org/0000-0002-7744-692X
Abstract The propagation properties of stress waves in rock masses are of great importance for exploring the internal structure of the Earth and avoiding earthquake disasters. Based on the modified displacement discontinuity method, the non-attenuation behavior of stress wave propagation through a rock mass with a large wave impedance to a rock mass with a small wave impedance was studied. The results show that the non-attenuation propagation of stress waves can occur when stress waves propagate from rock with a large wave impedance to rock with a small wave impedance. The non-attenuation propagation of stress waves is related to the incident wave frequency, the joint stiffness and the wave impedance ratio. The non-attenuation propagation of stress waves is most likely to occur when the incident wave frequency is low and the joint stiffness and wave impedance ratio are large. According to the critical condition for the non-attenuation propagation of stress waves, a threshold surface was identified. The region corresponding to non-attenuation stress wave propagation exists below the threshold surface.
Highlights Non-attenuation behavior of stress wave propagation through a rock mass was explored.Effects of frequency, joint stiffness and wave impedance ratio on non-attenuation behavior was investigated.A threshold surface for non-attenuation behavior in the FKN space (frequency f0, joint stiffness kn and wave impedance ratio n) was identified.
Non-attenuation Behavior of Stress Wave Propagation Through a Rock Mass
Wang, L. J. (author) / Fan, L. F. (author) / Du, X. L. (author)
2022
Article (Journal)
Electronic Resource
English
BKL:
38.58
Geomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
/
38.58$jGeomechanik
/
56.20$jIngenieurgeologie$jBodenmechanik
RVK:
ELIB41
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