Abstract:
Finite-difference time-domain method was used to simulate the finite-difference time-domain format of transient electromagnetic field in the uniform whole space with low-resistant anomalous objects, by using magnetic dipole source, and based on the passive Maxwell differential equation in the improved non-uniform grid model, then verify the accuracy of numerical simulation. The characteristics and laws were analyzed based on numerical modeling of diffusion of the whole space transient electromagnetic field and response characteristics of the containing water conductive fault with different thickness and depth. The results showed that the containing water conductive fault has obvious effect on the distribution of magnetic field, the starting time of the response of transient electromagnetic with the containing water conductive fault is influenced by the distance, and the response time of the scope and magnitude by the common effect of the distance and the thickness, the objectives are to provide reference for the containing water conductive fault of the whole-space TEM.