| 浅部不均匀体对目标体电阻率异常影响的研究 |
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| 引用本文： | 强建科,阮百尧,熊彬.浅部不均匀体对目标体电阻率异常影响的研究[J].地球物理学报,2004,47(3):542-548. |
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| 作者姓名： | 强建科 阮百尧 熊彬 |
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| 作者单位： | 中国地质大学地球物理与空间信息学院,武汉,430074;桂林工学院资源与环境系,桂林,541004;桂林工学院资源与环境系,桂林,541004;中国地质大学地球物理与空间信息学院,武汉,430074 |
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| 基金项目： | 国家自然科学基金项目 (40 0 640 0 1 ) |
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| 摘 要： | 浅部不均匀体能使电阻率测深曲线产生严重的畸变. 为了从根本上消除浅部不均匀体的干扰，本文采用三维有限元数值模拟的方法，计算出浅部不均匀体异常和混合体（目标体+不均匀体）异常，通过一定的校正方法，把不均匀体影响从混合异常中校正掉，从而实现对浅部不均匀体影响的定量校正.
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| 关 键 词： | 电阻率法 浅部不均匀体 三维有限元数值模拟 干扰校正 |
| 文章编号： | 0001-5733(2004)03-0542-07 |
| 收稿时间： | 2002-9-6 |
| 修稿时间： | 2003-12-2 |
A study on effects of shallow inhomogeneous body on object resistivity anomaly. |
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| QIANG Jian Ke , RUAN Bai Yao XIONG Bin Institute of Geophysics & Space Information,China University of Geosciences,Wuhan ,China.A study on effects of shallow inhomogeneous body on object resistivity anomaly.[J].Chinese Journal of Geophysics,2004,47(3):542-548. |
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| Authors: | QIANG Jian Ke RUAN Bai Yao XIONG Bin Institute of Geophysics & Space Information China University of Geosciences Wuhan China |
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| Institution: | 1.Institute of Geophysics & Space Information, China University of Geosciences, Wuhan 430074, China 2 Department of Resource & Environment, Guilin Institute of Technology, Guilin 541004, China |
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| Abstract: | It is well known that the critical distortion to resistivity sounding curves could be produced by shallow inhomogeneous bodies. In order to eliminate this interference, this paper adopts the 3 D finite element numerical simulation method to calculate the pure anomaly caused by an inhomogeneous body at shallow depth and a mixed body (object and the inhomogeneous body) anomaly, and corrects them through other correction methods. Finally we realize the quantitative correction for the inhomogeneous body at shallow depth. |
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| Keywords: | Resistivity method Inhomogeneity near-surface 3-D Finite element numerical modeling Disturbance correction |
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