Investigation of stress wave transmission across a nonlinearly jointed complex rock mass
Investigation of stress wave transmission across a nonlinearly jointed complex rock mass
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非线性节理复杂岩体应力波传输研究
DOI：
10.1016/j.ijrmms.2020.104485
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发表时间：
2020-12
影响因子：
7.2
通讯作者：
Wu Z
中科院分区：
文献类型：
--
作者：
Fan L;Wang L;Wang M;Wu Z
研究了波在非填充线性节理复杂岩体（节理两侧波阻抗不同）中的传播。(Fan例如，2018)1本文进一步研究了应力波在具有非线性特性的天然充填节理复杂岩体中的传播。在这项研究中，传统的特征线方法进行了修改。建立了应力波在复杂岩体中穿过非线性变形节理时质点速度的表达式。得到了颗粒速度传递系数和能量传递系数。讨论了入射波的频率和振幅、节理初始刚度以及复杂岩体的波阻抗比对质点速度传输和能量传输的非线性影响。结果表明，质点速度传递系数和能量传递系数与入射波、初始节理刚度和波阻抗比密切相关。质点速度传递系数随接头非线性系数的增大而增大。值得注意的是，对于“软-硬”岩体，质点速度传递系数总是小于1.0，而对于“硬-软”岩体，质点速度传递系数可以超过1.0。但无论是“软-硬”岩体还是“硬-软”岩体，能量传递系数均小于1.0。
The authors studied wave transmission across an unfilled linearly jointed complex rock mass (the wave impedances on the two sides of the joint are different). (Fan et al., 2018)1This paper further presents an investigation of stress wave transmission across a natural filled jointed complex rock mass, which behaves nonlinearly. In this study, the conventional characteristic method is modified. The expression of the particle velocity of a stress wave propagating through a complex rock mass across a nonlinearly deforming joint is established. The particle velocity transmission coefficient and energy transmission coefficient are obtained. The nonlinear effects of the frequency and amplitude of the incident wave, initial stiffness of the joint and wave impedance ratio of the complex rock mass on the particle velocity transmission and energy transmission are discussed. The results show that the particle velocity transmission coefficient and energy transmission coefficient are closely related to the incident wave, initial joint stiffness and wave impedance ratio. The particle velocity transmission coefficient increases with increasing nonlinear coefficient of the joint. It is noted that for the “soft-to-hard” rock mass, the particle velocity transmission coefficient is always smaller than 1.0, while for the “hard-to-soft” rock mass, it can exceed 1.0. However, the energy transmission coefficient is always smaller than 1.0 for both the “soft-to-hard” rock mass and the “hard-to-soft” rock mass.
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DOI：
10.1016/j.ijrmms.2012.12.046
发表时间：
2013-06-01
影响因子：
7.2
作者：
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通讯作者：
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影响因子：
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DOI：
10.1016/j.ijrmms.2018.01.046
发表时间：
2018-03-01
影响因子：
7.2
作者：
Liu, Yi;Dai, Feng
通讯作者：
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DOI：
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发表时间：
2017-03
影响因子：
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