| 摘要 |
The invention relates to a device for the determination, in a borehole, of the slope and of the azimuth of a discontinuity layer in a homogeneous terrain. It includes three emitting induction coils (1a, 1b, 1c) and three receiving induction coils (2a, 2b, 2c), means for supplying each of the emitting coils with alternating electric current, means for measuring the responses of each of the receiving coils and for isolating in each of the three responses the part resulting from the excitation of each of the emitting coils, and means (7) for deducing from the parameters thus obtained the slope and the azimuth of a layer crossed by the device.
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