摘要
应力波在岩体中传播规律的研究是岩石动力学的重要课题之一。基于应力和位移皆不连续的假定,针对充填节理的黏弹性特性,建立P波和S波斜入射单个充填节理的频域形式的透反射系数方程组。通过数值计算和参数分析,进而讨论入射角、入射波频率以及节理刚度等参数对应力波斜入射充填节理透反射规律的影响,而入射波参数和充填节理动态特性参数的合理选取是确定透反射系数的关键。
The study of stress wave propagation in rock mass is an important topic in rock mechanics.Based on the assumption of displacement and stress discontinuity,for the visco-elastic behavior of filled joint,the transmission and reflection coefficient equations of P-wave and S-wave in the frequency domain are respectively derived.By numerical calculation and parameter analysis,the impact of parameters on the law of stress wave propagation is studied,such as the incident angle,the incident wave frequency and joint stiffness.Reasonable parameters selections of incident wave and filled joint have significant effects on the determination of transmission and reflection coefficient.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2012年第A02期3593-3598,共6页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金资助项目(11072257)
国家自然科学基金杰出青年基金项目(51025935)
国家重点基础研究发展计划(973)项目(2010CB732001)
关键词
岩石力学
波传播
填充节理
透反射系数
Snell定律
rock mechanics
wave propagation
filled joint
reflection and transmission coefficients
Snell s law
