中南大学学报（自然科学版）2011，Vol.42Issue(4)：1133-1139,7.
线性节理对岩石电磁辐射传播的影响
Effect of linear joint on propagation of rock electromagnetic emission
摘要
Abstract
Based on piezoelectric effect of rock and the electric field expression under stress wave and the resolution of the transmitted coefficients in the joint, the intensity variation of the electromagnetic emission (EME) before and after the linear joint under the normal incident stress wave was obtained.The effects of such parameters as initial joint stiffness,the electric parameters of the rock masses and incident frequency of wave on the intensity variation of the EME were investigated.The results show that the intensity of EME increases with the increase of joint stiffness and decreases with the increase of frequency; the intensity of EME decreases first then increases with the increase of viscosity coefficient,which relates to electric resistivity variation induced by viscosity coefficient change and frequency.When the rock properties on the two sides of the joint are different, the variation of EME intensity becomes complicated under the influence of many parameters.关键词
压电效应/电磁辐射/线性节理Key words
piezoelectric effect/ electromagnetic emission/ linear joint分类
天文与地球科学引用本文复制引用
万国香,李夕兵,王其胜..线性节理对岩石电磁辐射传播的影响[J].中南大学学报（自然科学版）,2011,42(4):1133-1139,7.基金项目
国家自然科学基金资助项目(10472134) （10472134）
