期刊
JOURNAL OF APPLIED GEOPHYSICS
卷 102, 期 -, 页码 39-46出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jappgeo.2013.11.014
关键词
Wave propagation; Filled rock joint; Thin-layer interface model; Dynamic behavior; Displacement discontinuous boundary
资金
- Chinese National Science Research Fund [41272348, 11072257, 51025935]
- Major State Basic Research Project of China [2010CB732001]
The thin-layer interface model (TLIM) for filled joints is extended to analyze wave propagation obliquely across jointed rock masses. In the paper, the filling material is equivalent as an elastic and continuum medium and the filled joint is modeled as a thin-layer interface with one thin thickness. By back analysis, the normal and tangential dynamic properties of the filled joint are theoretically estimated. Comparison is then carried out between the present approach and the existing analytical methods when an incident longitudinal (P) or transverse (S) wave normally or obliquely impacts filled joints. For the existing methods, joints are usually modeled as the displacement discontinuous boundaries with zero thickness. Finally, the effect of relevant parameters, such as the joint thickness, the frequency of the incidence, the incident angle and the ray path derivation, on wave propagation and the cause of the discrepancy between the thin-layer interface and the zero-thickness interface models are discussed. (C) 2014 Elsevier B.V. All rights reserved.
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