Induced Polarization Method In The Ladder Device Resistivity Of The Terrain Correction

Dual frequency induced polarization method belongs frequency domain IP method, and it is a very effective geophysical method, it has most advantages, such as anti-interference ability, light, stable and high-precision observation, so it can be used in the condition of complex terrain and bad natural condition, and this method has been used more and more widely in mineral exploration.The research of geoelectric anomaly on the undulate topography has been a difficult problem in the field of electrical prospecting for a long time, it is not only complicated itself, but also the level of technology development cannot be achieved. In recent years, through the efforts of geophysical experts, the problem of 2-D on undulate topography resistivity forward and inverse imaging has been solved. In this paper, we mainly research the terrain correction of resistivity data about dual frequency induced polarization method on undulate topography, and made it becomes another evidence to judge underground media.This paper researched the boundary element method for resistivity modeling with a point current source of dual frequency induced polarization method and terrain correction in 2D/3D undulate topography, we used BEM to partite the boundary, and carry out a more comprehensive formula derivation on the basis of previous, a suit of 2-D forward algorithm codes is also accomplished, we establish a pure model and research different 2D undulate topography models, and established non-uniform 2D undulating terrain models, analysis low vertical tabular body and high level plate body models, it verified the correct of the algorithm, as well as the reliability of the procedure. These research achievements of DC resistivity has established foundation for further studying2D or 3D resistivity forward modeling and inversion imaging on undulate topography.