Abstract: To detect and predict the groundwater conditions in front of and surround the tunnel face, improve the angle control accuracy of transient electromagnetic field data collection, reduce the safety risks of field data collection, and improve the timeliness of transient electromagnetic detection results, the development of tunnel transient electromagnetic threedimensional(3D) intelligent prediction equipment and system is conducted. Based on the 3D detection technology of fixpoint rotation angle in the tunnel, the equipment can realize remote control data automatic collection and automatic plotting through wireless WIFI or Bluetooth communication, improving the timeliness of submitting transient electromagnetic detection results and reducing the safety risks during detection. The application results of the equipment in a highspeed railway tunnel in ChongqingGuizhou railway are good, validating its good practicability.

Key words: tunnel, geological prediction, threedimensional transient electromagnetic, fixpoint rotation angle, equipment development, automatic angle control, intelligent plotting