Simulation Research of Three-Dimensional Central-Gradient Electric Sounding With Multi-Electrode Distance
详细信息
- 责任者：Li Jinghe (Institute of Geophysics and Geomatics ; China University of Geosciences ; Wuhan 430074 ; China) ; Lü Yuzeng
- 刊名：Geology and Prospecting
- 出版年：2012
- 卷期：48(6)
- 关键词：激发极化测深 ; induced polarization sounding ; 中间梯度法 ; middle-gradient methods
- 页码：p.1199-1205
- 图表：illus., 15 refs.
- 分类号：1600
- issnNo：ISSN0495-5331
- isbnNo：CN11-2043/P
摘要
By a grid of tetrahedralization, this paper performs numerical simulation on sphere models and combination models by using the three-dimensional finite element method. The results reveal the spatial distribution of electric anomalies produced by the models, and can do volumetric sounding without adding too much work. Combined simulation of resistivity and polarizability attains high accuracy and good stability. And the simulation results of copperplate and copper billet by physical experiments performed in water channels verify the feasibility and validity of the multiple-electrode-distance central gradient sounding. These simulation results are of great significance for application of the method and follow-up inversion calculation.