P-wave propagation across a viscous-elastic rock mass with a structural plane

被引：0
|
作者：
Wang H. [1 ,2 ]
Chai S. [1 ,2 ]
Yu L. [2 ]
Jing Y. [1 ]
Zhou T. [1 ]
机构：
[1] School of Civil Engineering, Chang'an University, Xi'an
[2] State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou
来源：
Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2020年 / 39卷
基金：
中国国家自然科学基金;
关键词：
Rock mass; Rock mechanics; Stress wave; Transmission coefficients; Viscoelastic; Wave propagation; Wave quality factors;
D O I：
10.13722/j.cnki.jrme.2019.0879
中图分类号：
学科分类号：
摘要：
The propagation of stress waves in discontinuous structural plane such as jointed rock mass and weak interlayer is an important research direction of rock dynamics. The time delay and amplitude attenuation always occur, as the wave across viscoelastic rock. The rock mass was assumed as the Kelvin body in this paper, and the wave propagation equation in the viscoelastic body is established using the wave quality factors. The interaction between the P wave and a linear elastic structural plane is analyzed. Based on the solution of the reflection coefficient of P wave passing through the structural plane in the frequency domain, the propagation rules of the planar stress wave in viscoelastic rock mass, which contains a linear elastic structure surface, was analyzed. Then the expressions of the transmission velocity of P and S waves at any point on the monitor-surface were obtained. The normal and tangential transmission coefficients of plane P wave through the structural plane of viscoelastic rock mass are calculated, using the superposition principle of wave. The parameter studies show that the attenuation and time delay are obvious, when the stress wave propagates in the viscous elastomer. And the structural surface characteristics and incident wave frequency have certain influence on the transmission coefficient. © 2020, Science Press. All right reserved.
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页码：2763 / 2770
页数：7
相关论文
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