Technical Principle：It uses the principle that electromagnetic waves attenuate at different speeds in strata with different electrical conductivities to detect water - bearing and water - rich anomalies inside the working face and in the roof and floor.

On - site Layout Diagram of Transient Electromagnetic Detection in the Working Face

Application Scenarios：

Detection of water - richness in the roof and floor aquifers, collapse columns, faults, etc. of the working face.

Detection of water - richness in old goafs in the roof and floor of the working face.