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为了解决岩溶类型煤田水文地质问题,几年来,我们在上级领导和兄弟单位的支持下,引进了无线电波透视法来探寻充水岩溶的空间分布位置。该法根据是:电磁波在地下传播时,当遇到比周围岩石电阻率更低的介质时,由于低阻介质对电磁波的吸收、界面反射等特性,在其背面形成了一个接受不到讯号或讯号显著减弱的“阴影区”。利用不同角度进行透视所产生的各条阴影带进行交会而确定出低阻介质的具体位置,故亦称“阴影法”。我国地质部门已成功地将该法应用于找寻金属盲矿体。我们探寻的对象是充水溶洞,它产生在高阻的灰岩中,而溶洞中的水与灰岩相比为低阻,二者电阻率一般相差10~2～10~5倍。
In order to solve the problem of hydrogeology in karst coalfields, we have introduced the radiowave perspective method to explore the spatial distribution of water-filled karst in the past few years with the support of the superiors and brothers. The law is based on the following: electromagnetic waves in the ground when it encounters lower than the surrounding rock resistivity medium, due to the absorption of low-impedance electromagnetic waves, interface reflection and other characteristics, the back of the formation of a signal can not receive or The “shaded area” markedly weaker signal. The use of perspective from different perspectives produced by the intersection of the shadow zone to determine the specific location of the low resistance medium, it is also known as the “shadow method.” Our geological department has successfully applied the law to find blind metal bodies. The object we are looking for is a water-filled cave, which is produced in a highly resistive limestone. Water in the cave is low-resistivity compared with limestone, and the resistivities are generally 10 to 2 to 10 to 5 times lower.