Forward Calculation of 2-D and 3-D Structures with a Cover by the Boundary Element Method while Using Electrical Methods

摘要

This paper develops the boundary element method,the authors employtwo-layered earth Green’s functions as the weighting functions of residual andderive boundary integral equations.The forward problems of point sources on2-D and 3-D structures with an influencing cover are solved by this method.The results show that this method markedly improves the original boundaryelement method.The features of the improved method are greater numericalaccuracy and much smaller systems of equations and thus considerable savingsfor the storage capacity of computers,allowing us to solve the above problemswith only ordinary microcomputers.The results in this paper extend the scopeof applying the boundary element method while using electrical methods forgeophysical prospecting.