开尔文型节理岩体电磁辐射的影响

The Intensity Variation of the Electromagnetic Emission (EME) in Rock with Kelvin Non-welded Contact Joint

为进一步明确岩石中节理对电磁辐射传播的影响,基于压电效应,获得纵波作用下产生的电磁波在开尔文型节理面前后的强度关系。研究了节理参数、岩体电性参数等对电磁辐射强度的影响。结果表明,电磁辐射的强度随节理初始刚度增大而增大;电磁辐射强度随粘性系数增大而增大;电磁辐射强度随粘性系数的变化同时受到频率的影响。研究结果与其他学者得出的实验结果一致的。

In order to make clear the effect of the joint on the propagation of rock EME,based on piezoelectric effect,the intensity variation of the EME before and after the linear joint under the normal incident stress wave is obtained.The effects of such parameters as initial joint stiffness,the electric parameters of the rock masses on the intensity variation of the EME are investigated.The results show that the intensity of EME increases with the joint stiffness;the intensity of EME increases with viscosity coefficient;the variation of the EME with viscosity coefficient is influenced by frequency.The research results are in agreement with others experimental results.