JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2009, Vol. 39 ›› Issue (4): 61-64.

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The application of the TEM 3D imaging technique in geological forecasts

  

  1.   SU Mao-Xin, LI Shu-Cai, ZHANG Qing-Song, XUE Yi-Guo, QIU Dao-Hong：Geotechnical and Structural Engineering Research Center， Shandong University, Jinan 250061, China;
    LI Xiu： College of Geology Engineering and Geomatics, Chang'an University, Xi'an710054, China
  • Received:2009-05-20 Online:2009-08-24 Published:2009-08-24

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Abstract:

The 2D section of apparent resistivity contour lines are usually  used in the interpretation result of transient electromagnetic (TEM). However, the 3D image is  straighter, and has more abundant information and comprehensive interpretation compared to the 2D image, which can improve the interpretation accuracy of the TEM geological forecast.  The 3D curved surface continuation method was adopted to discuss the TEM 3D imaging technique and its application in tunnel geological forecasts. [JP2]First, the 3D curved surface continuation imaging method principle was introduced. Second, the 3D curved surface continuation imaging technique characters and its application effect analysis was discussed. Finally,  some conclusions and laws were summed up in order to guide the transient electromagnetic method in  tunnel geological forecasts in order to improve the accuracy of the TEM detection.

Key words: transient electromagnetic; 3D imaging; curved surface continuation; geological forecast

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