Normally incident wave propagation across a joint set with the virtual wave source method

被引：62

作者：

Zhu, J. B. ^{[2
]}

Zhao, X. B. ^{[1
]}

Li, J. C. ^{[2
]}

Zhao, G. F. ^{[2
]}

Zhao, J. ^{[2
]}

机构：

[1] Nanjing Univ, Sch Earth Sci & Engn, NJU ECE Inst Underground Space & Geoenvironm, Nanjing 210093, Peoples R China

[2] Ecole Polytech Fed Lausanne, Sch Architecture Civil & Environm Engn ENAC, LMR, EPFL ENAC LMR, CH-1015 Lausanne, Switzerland

来源：

JOURNAL OF APPLIED GEOPHYSICS | 2011年 / 73卷 / 03期

基金：

瑞士国家科学基金会;

关键词：

Wave propagation; Rock joints; Virtual wave source method; Transmission coefficient; MULTIPLE PARALLEL FRACTURES; DEFORMATIONAL BEHAVIOR; TRANSMISSION; SLIP; ROCK; ATTENUATION; ANISOTROPY; MEDIA;

D O I：

10.1016/j.jappgeo.2011.01.012

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

This paper presents an analytical study on normally incident wave propagation across a joint set. Combined with the displacement discontinuity method (DDM), the virtual wave source method (VWSM) is adopted to take account of multiple wave reflections among joints. After theoretical formulation, a comparison between results from VWSM and those from the method of characteristics (MC) is carried out. These results agree well with each other, and the applicability of VWSM into wave propagation study is verified. Subsequently, an interesting phenomenon, i.e., the magnitude of transmission coefficient increases with joint number on some circumstances, is pointed out and studied. By analyzing differently arriving transmitted waves and their superposition, such phenomenon is explained. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：283 / 288

页数：6

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