A Prediction Model Based on the Long Electrode Source for Fault Anomaly in Tunnel

Table 2

Predicted results of LE and PE prediction models for tunnel detection and their errors.

Distance (m)	Prediction model	Offset (m)	Predicted distance (m)	Error (%)
	PE			0.80
	LE ()			0.45
	PE			41.6
	LE ()			-2.33
	PE	/	/	/
	LE ()			-3.72