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Doumo Tunnel

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Journal Article
Published: 01 September 2020
Journal of Environmental and Engineering Geophysics (2020) 25 (3): 315–323.
... the electrical installations. The low SNRs emphasize the importance of using an optimal post-processing strategy to obtain the reliable underground NMR data. The objective of this paper is to explain the processing of underground NMR data taking the detection of the underground river in Doumo Tunnel...
FIGURES | View All (7)
Image
The measurement site of the underground river in <b>Doumo</b> <b>Tunnel</b>: a) Shows the...
Published: 01 September 2020
Figure 5 The measurement site of the underground river in Doumo Tunnel: a) Shows the karst cave located outside the left wall of the tunnel; and b) is a photo of the coil layout.
Image
Underground-NMR inversion result from the underground river, <b>Doumo</b> <b>Tunnel</b>. ...
Published: 01 September 2020
Figure 7 Underground-NMR inversion result from the underground river, Doumo Tunnel. The model is estimated in terms of water content and relaxation time T 2 * as a function of depth.