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An application of CSAMT to a geological investigation for railway route selection
Author(s) -
Lei Da,
Zhao Guoze,
Yang Zhihong,
Zhao Fugang,
Li Xiaochang
Publication year - 2008
Publication title -
near surface geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.639
H-Index - 39
eISSN - 1873-0604
pISSN - 1569-4445
DOI - 10.3997/1873-0604.2008006
Subject(s) - geology , magnetotellurics , depth sounding , regional geology , economic geology , environmental geology , engineering geology , gemology , selection (genetic algorithm) , resistive touchscreen , seismology , mining engineering , telmatology , computer science , engineering , tectonics , oceanography , volcanism , computer vision , electrical engineering , electrical resistivity and conductivity , artificial intelligence
The controlled‐source audio‐frequency magnetotelluric method is a frequency domain electromagnetic sounding technique using a controlled source. This method, though characterized by efficiency, high lateral resolution, weak shielding effect from resistive beds and moderate detection depth has been rarely used for near‐surface geological investigation before in China. However, in the upper 200 m geological investigation for the pre‐route selection of the Lan‐Xin railway, the method has been successfully adopted for quickly mapping hidden fracture zones and structural framework, as well as assessing geological stability, so providing a basis for the railway route selection.