1887

Abstract

In underground coal mines where coal is left in the roof or floor after mining, it is often necessary to measure the<br>thickness of the remaining coal. Radar and radar-like techniques have been attempted in the past but have met with<br>limited success. By taking advantage of the resistive contrast between the coal and the surrounding rock<br>electromagnetic sounding (EM) has been proposed as a feasible technique to achieve non-intrusive coal thickness<br>measurements.

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/content/papers/10.3997/2214-4609-pdb.154.047
2005-09-14
2021-01-25
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