Numerical simulation study on response characteristics of the different geological models of mine full-space transit electromagnetism

摘要

In this paper, it builds the geological simulations models for low resistance abnormity, high resistance abnormity, water flowing fault, water flowing subsided column, water accumulating gob and non-water accumulating gob according to the mine full-space transmit electromagnetic detection theory and by aiming at the several main water inrush structures of mine. Moreover, it gives numerical simulation to full-space transit electromagnetic responses of the several models above by utilizing MA TLAB software, and the analytical research results indicate that the mine transit electromagnetism can distinguish the low resistance abnormity more obvious and the high resistance abnormity slightly inferior, especially that simulation detection curve of the water accumulating gob is more obvious. Simultaneously, the induced voltage corresponding to the low-resistance reaction is represented as high potential, and that corresponding to the high-resistance reaction is represented as low potential, and this trend is basically same as that of the half space.