矿井瞬变电磁重叠回线装置实验研究

Experimental Study of Mine Transient Electromagnetic Overlapping Loop Device

  • 摘要: 针对井下特殊的工作环境,对不同边长、不同形状和不同匝数的重叠回线装置与关断时间、接收信号质量之间的关系进行了定性研究,通过实验得出了如下结论:关断时间受重叠回线装置的形状和接收线圈的匝数影响较小,而对重叠回线装置的面积和发射线圈匝数的变化较为敏感,基本上呈现线性增加关系;在井下有限的施工空间中,适当增大重叠回线装置的面积和加大接收线圈的匝数可以明显提高和保证接收信号的质量;而圆形的重叠回线装置在相同周长的情况下,能够获得最大的接收面积;发射线圈匝数的增加无助于接收信号质量的改善。

     

    Abstract: According to special underground working environment, the paper researched relationship between overlapping loop device with different length, different shapes and different number of turns and turn-off time and quality of received signal. And got conclusions as follows: the turn-off time is less influenced by shape of the overlapping loop and number of turns of receiving coil, is more sensitive to change of area of the overlapping loop and number of turns of transmitting coil which shows a linear increase relation. In limited underground construction space, increasing area of the overlapping loop and number of turns of the receiving coils can obviously improve and guarantee quality of the received signal. Circular overlapping loop device can obtain the maximum receiving area in the same circumference. Increasing number of turns of the transmitting coil does not contribute to improvement of quality of the received signal.

     

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