| 半空间非水平层状介质瑞雷面波的频散方程 |
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| 引用本文： | 牛滨华,何继善.半空间非水平层状介质瑞雷面波的频散方程[J].物探与化探,1996,20(5):345-350,358. |
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| 作者姓名： | 牛滨华 何继善 |
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| 作者单位： | 中南工业大学 |
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| 摘 要： | 由于工程勘察中的一些特殊情况,使面波以往的一些理论和结论受到了不同程度的限制。本文从弹性动力学虚功变分原理出发,在重点分析自由表面外力提供的能量来源时,引入了等效面波(能量)震源概念。然后用有限元法建立了半空间多个非水平层状介质瑞雷西波的频散方程。这项工作有助于面波理论和应用技术的发展完善。
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| 关 键 词： | 瑞雷面波 虚功变分方程 等效面波震源 频散方程 |
| 收稿时间： | 1996-04-28 |
FREQUENCY DIVERGENT EQUATION OF RAYLEIGH SURFACE FOR HALF-SPACE NONHORIZONTAL LAYER MEDIA |
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| Niu Binhua,He Jisha.FREQUENCY DIVERGENT EQUATION OF RAYLEIGH SURFACE FOR HALF-SPACE NONHORIZONTAL LAYER MEDIA[J].Geophysical and Geochemical Exploration,1996,20(5):345-350,358. |
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| Authors: | Niu Binhua He Jisha |
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| Institution: | Central South Polytechnic University. Changsha 410083 |
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| Abstract: | Due to some specific conditions in engineering exploration, some previous theories and conclusions of surface wave have different degrees of limitations in application. In the light of the virtual work variation principle of elastic dynamics, the present paper, when emphatically analysing free surface energy source provided by external forces, introduced the concept of equivalent surfauce wave (energy) seismic focus. Then, with finite element method, the frequency divergent equation of Rayleigh surface wave for half-space multiple nonhorizontal layer media was established. The work contributes to the development and improvement of the surface wave theory and its applied technique. |
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| Keywords: | Rayleigh surface wave virtual work variation equation equivalent surface wave seismic focus frequency divergent equation |
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