An Experimental Study on Scale-Dependent Velocity and Anisotropy in Fractured Media Based on Artificial Rocks with Controlled Fracture Geometries
| العنوان: | An Experimental Study on Scale-Dependent Velocity and Anisotropy in Fractured Media Based on Artificial Rocks with Controlled Fracture Geometries |
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| المؤلفون: | Xiang-Yang Li, Ding Wang, Pinbo Ding |
| المصدر: | Rock Mechanics and Rock Engineering. 53:3149-3159 |
| بيانات النشر: | Springer Science and Business Media LLC, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Materials science, Scale (ratio), Scattering, 0211 other engineering and technologies, Geology, 02 engineering and technology, Mechanics, 010502 geochemistry & geophysics, Geotechnical Engineering and Engineering Geology, 01 natural sciences, Measure (mathematics), Physics::Fluid Dynamics, Scale dependent, Fluid dynamics, Fracture (geology), Porosity, Anisotropy, 021101 geological & geomatics engineering, 0105 earth and related environmental sciences, Civil and Structural Engineering |
| الوصف: | The scale of the fractures can vary, making the seismic velocity and anisotropy substantially scale dependent. Two mechanisms of the scale-dependent phenomenon may be considered: scattering and wave-induced fluid flow. In this study, we measure the scale-dependent velocity and anisotropy effects through laboratory experiments on porous and non-porous artificial rocks containing aligned fractures. This allows us to isolate the effects of these two mechanisms for the first time, yielding some insights into the scale-dependent phenomenon. For short-wavelength waves, scattering dominates with less wave-induced fluid flow effects. For intermediate- and long-wavelength waves, the P-wave is strongly scale dependent mainly due to wave-induced fluid flow mechanism, and the slow shear-wave is also strongly scale dependent but due to both scattering and wave-induced fluid flow. However, the fast shear-wave is almost scale independent. Moreover, a multi-scale equivalent medium theory can model the P-wave propagation accurately. |
| تدمد: | 1434-453X 0723-2632 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::bda0921b2ec2cf869a784aa8ad4e56b2 https://doi.org/10.1007/s00603-020-02095-2 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........bda0921b2ec2cf869a784aa8ad4e56b2 |
| قاعدة البيانات: | OpenAIRE |
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