工作面顶板富水区的矿井瞬变电磁法探测

Detection of Rich Water Areas About Coal Seam Roof by Mine Transient Electromagnetic Method

介绍了矿井瞬变电磁法的工作原理、布置方法和技术特点,给出了全空间条件下晚期视电阻率表达式。结合实例,探讨了资料解释方法。研究表明,矿井瞬变电磁法能有效查明煤层顶板水害体的发育位置,为井下布置探放水钻孔提供依据。

The article introduces the working principles,the arrangement mode of observation system and technical features of the transient electromagnetic method used for detection in the coal mine,gave an apparent resistivity expression in the later period under the whole-space condition,and probes into the interpretation of information in combination with the prospecting examples.The research shows that the mine transient electromagnetic method can be used to find out effectively the position of a water body located in roofs so as to provide a basis for water drainage borehole layout.