Application of Comprehensive Geophysical Prospecting Method in the Exploration of Coal Mined-Out Areas

<div>Different data processing methods for transient electromagnetic exploration. (a) Late formula for calculating the resistivity section. (b) Inversion method for calculating the resistivity section.</div>

Advances in Civil Engineering

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Figure 9

Figure 9: Application of Comprehensive Geophysical Prospecting Method in the Exploration of Coal Mined-Out Areas 