An Electrode Arrangement Method for Downhole DC Advance Detection
A technology of advanced detection and electrode arrangement, applied in the field of electric and electromagnetic exploration, can solve the problems of not being successful, not considering the lateral perception ability of the driving face, and heavy workload, so as to avoid misjudgment and avoid massive model simulation.
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[0033] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0034] The dipole-dipole arrangement is used to realize the detection directly in front of the excavation face.
[0035] According to the placement method of the receiving electrode described in the technical scheme, the receiving electrode MN is placed on the excavation surface, see figure 2 The location of the MN in ;
[0036] According to the method of noise measurement in the signal-to-noise ratio described in the technical plan, the noise signal level is first measured by receiver air mining under the condition of no emission; The axis is in the opposite direction, and the interval required by the longitudinal resolution is set to move at 2m; according to ② in the technical plan, when the signal received by the receiving electrode is less than 3 to 5 times the noise, or the signal is less than the sensitivity of the receiver, ...
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