巷道煤层天然电磁波法超前探测

Working principle of tunnel coal-bed advanced detection with natural electromagnetic wave

利用天然电磁波研制的DTY型地电探测仪,多年来一直在地面探查煤层厚度和附近小构造。根据生产需要,研制了井下巷道煤层超前探测仪,在巷道掌子面前顺着煤层的视倾角可以超前探测100 m内煤层厚度,及煤层附近的小断层。

The DTY type natural electromagnetic wave detector has been usually applied to operation on ground level to probe the thickness of coal beds and surrounding minor structures.According to the need of coal mining,the Undergroung Roadway Coal-Bed Advanced Detector can probe the variation of coal-bed thickness and minor structures nearby the coal bed at front of the channel work plane.