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| 非均匀半空间三维边界积分方程数值模拟 | |
| 引用本文： | 孙紫英,胡玉平,鲍光淑.非均匀半空间三维边界积分方程数值模拟[J].物探与化探,2000,24(6):431-437. |
| 作者姓名： | 孙紫英 胡玉平 鲍光淑 |
| 作者单位： | 1. 内蒙古有色地质勘查局矿勘院,内蒙古,呼和浩特,010050 2. 中南工业大学地球物理研究所,湖南,长沙,410083 |
| 摘 要： | 利用边界积分方程数值模拟法对地下三维地质体的地表视电阻率响应进行研究,讨论了现实情况中的地形起伏及局部电性不均匀的影响及“奇异值分解”滤波法的效果,分析对比温纳、纵向四极及偶极—偶极 3种测深装置下的剖面计算结果,归纳总结了各种测深装置下的视电阻率剖面拟断面异常特征与目标体的空间几何参数对应规律。利用这种对应关系可对地下目标地质体进行大致定位。 |
| 关 键 词： | 非均匀半空间 数值模拟 奇异值分解 视电阻率 |
| 收稿时间： | 2000-01-05 |
| 修稿时间： | 2000-03-20 |
VALUE MODELLING OF 3-DIMENTIONSL UNDERGROUND GEOLOGICAL BODIES |
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| SUN Zi-ying,HU Yu-ping,BAO Guang-shu.VALUE MODELLING OF 3-DIMENTIONSL UNDERGROUND GEOLOGICAL BODIES[J].Geophysical and Geochemical Exploration,2000,24(6):431-437. | |
| Authors: | SUN Zi-ying HU Yu-ping BAO Guang-shu |
| Institution: | 1. Inner Mongolia Geological Exploration Bureau for Nonferrous Resources, Hohhot 0100501, China; 2. Institute of Geophysical Exploration, Central South University of Technology, Changsha 410083, China |
| Abstract: | This paper describes in detail the process of numerical modeling forthe apparent resistivity (in direct current domain) to 3-dimensional underground geological bodies according to the boundary integral equation and the spatial locations of the bodies. Based on previous theoretical basis and progressive modification in some aspects, the authors modeled and examined the response to several different kinds of sounding devices. As a result, some principles concerning the locations of underground electrical bodies and the corresponding relationship between the geometric parameters of underground objective bodies and the types of characteristics of apparent resistivity anomalies were obtained. |
| Keywords: | homogeneous half space numerical modeling singular value decomposition |
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