Paper Title:
Numerical Simulation of Transient Electromagnetic Response of Unfavorable Geological Body in Tunnel
  Abstract

To investigate the transient electromagnetic method of response characteristics in the tunnel geological prediction, the finite element numerical simulation of unfavorable geological body of different location, different resistivity sizes, different shapes, and different volume size were carried out by ANSYS finite element software. The results show that secondary electromagnetic field of different location of unfavorable geological body have same decay rate, when detection distance from 30m to 70m, transient electromagnetic responses are strongest, followed distance from 10m to 30m and from 70m to 90m. The shape, volume and resistivity of unfavorable geological body have strong influence on transient electromagnetic response, unfavorable geological body more sleek, the greater the volume and the smaller the resistivity of unfavorable geological body, the secondary electromagnetic field decay slower.

  Info
Periodical
Edited by
Xuejun Zhou
Pages
37-40
DOI
10.4028/www.scientific.net/AMM.90-93.37
Citation
L. B. Meng, T. B. Li, Z. Duan, "Numerical Simulation of Transient Electromagnetic Response of Unfavorable Geological Body in Tunnel", Applied Mechanics and Materials, Vols. 90-93, pp. 37-40, 2011
Online since
September 2011
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