To Excitation Polarization Numerical Simulation And Its Application In The Mineral

IP method, which is a very effective way to prospect metal ores, has severalunique advantages, especially when the conductivity of the abnormality is very closeto surrounding rocks. In order to employ the IP parameters more efficiently in theinverse problem and abnormality evaluation, it’s of great signification to study theforward numerical simulation of this method.This article focuses on the induced polarization sounding widely used fixed-point source method. Forward Modeling choose finite element method, from the point source dimensional geoelectric problem, this paper introduces the basic principles of the finite element method, stable current field boundary value problems discussed. To stabilize the current through the field based on partial differential equations, using the third boundary condition is derived with stable current field of partial differential equations corresponding variational problem. The finite element method, carried out detailed regional split, linear interpolation, element analysis, the overall matrix synthesis, linear equations and a series of processes discussed. Is mainly used to optimize the inversion method of least squares inversion, introduces the basic principles. Then for the fixed point source sounding device, designed to simulate different models and inversion imaging of the inversion results were summarized to give a series of understanding of the law.Finally, in order to Lala copper, for example, through a combination of scanning surface resistivity induced polarization, polarization contours delineated meaningful exception M2, according to sweep the surface resistivity results suggest that the nature of M2exceptions may be provided by two different exceptions structures are generated, but the results stimulated electronically scanned surface limited resolution, in order to better determine its M2abnormal abnormal range, depth, nature and other physical parameters, abnormal ranges designed two sounding lines were L32and L36, by bathymetric data processing and mapping results show that in the abnormal range L32line corresponds to the abnormal nature of low resistivity high polarization, L36line impedance corresponding to the nature of high chargeability anomalies, through a combination of geological interpretation that, L32wire resistivity high chargeability anomaly is due to the copper and iron ore lumps caused, L36line impedance high chargeability anomaly is due to infection caused by the shape of the copper ore anomalies. Inversion results show that M2exceptions should not the same nature as the two co-produced abnormal structure, combined with the same survey line survey area gravity data analysis also verified SOUNDING speculation.