煤层中的无线电传播及其反问题。

D A Hill
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引用次数: 19

摘要

地下煤层长壁开采法在均匀煤层中开采效率高,但煤层异常会使长壁开采法无利可图且不安全。本文论述了利用200 m量级的中频无线电传输路径探测煤层异常的理论基础。该方法的关键在于煤层传播模式衰减速率对煤层高度或导电性等参数变化的敏感性。从大量的传输路径,层析成像的原理可以用来重建一个图像的接缝。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Radio Propagation in a Coal Seam and the Inverse Problem.

The longwall method of mining in underground coal seams is very efficient in uniform seams, but coal seam anomalies can make the method unprofitable and unsafe. This paper describes the theoretical basis for detection of coal seam anomalies using medium frequency (MF) radio transmission over paths on the order of 200 m in length. The key to the method is the sensitivity of the attenuation rate of the coal seam mode of propagation to changes in the coal seam parameters, such as height or electrical conductivity. From a large number of transmission paths, the principles of tomography can be used to reconstruct an image of the seam.

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