Accuracy Evaluation of Advanced Geological Prediction Based on Improved AHP and GPR

Table 1

Standard value of membership degree of evaluation factor.

Items	Factor	Standard value	More accurate	Accurate	Relatively accurate	Inaccurate
Raw data collection	Frequency selection	100 MHz	0.85 ≤ F1	0.7 ≤ F1 < 0.85	0.65 ≤ F1 < 0.75	0.4 ≤ F1 < 0.65
	Time window selection	500 ns	0.9 ≤ F2	0.8 ≤ F2 < 0.9	0.7 ≤ F2 < 0.8	0.6 ≤ F2 < 0.7
	Antenna spacing selection	1.8 m	0.95 ≤ F3	0.85 ≤ F3 < 0.95	0.75 ≤ F3 < 0.85	0.65 ≤ F3 < 0.75
	Measuring point distance	0.1 m	0.9 ≤ F4	0.7 ≤ F4 < 0.9	0.5 ≤ F4 < 0.7	0.4 ≤ F4 < 0.5
	Line layout	60%	0.85 ≤ F5	0.75 ≤ F5 < 0.85	0.65 ≤ F5 < 0.75	0.55 ≤ F5 < 0.65
	Site interference	100%	0.95 ≤ F6	0.9 ≤ F6 < 0.95	0.85 ≤ F6 < 0.90	0.75 ≤ F6 < 0.85
Geological condition	Tunnel face information	1	0.95 ≤ F7	0.85 ≤ F7 < 0.95	0.75 ≤ F7 < 0.85	0.65 ≤ F7 < 0.75
	Overall tunnel information	1	0.75 ≤ F8	0.5 ≤ F8 < 0.75	0.25 ≤ F8 < 0.55	0 ≤ F8 < 0.25
Software processing	Offset and enhancement	1	0.9 ≤ F9	0.8 ≤ F9 < 0.9	0.7 ≤ F9 < 0.8	0.6 ≤ F9 < 0.7
Interpretation of image data	—	1	0.8 ≤ F10	0.6 ≤ F10 < 0.8	0.4 ≤ F10 < 0.6	0.2 ≤ F10 < 0.4
Prediction of distance	—	—	F11 ≤ 15 m	15 m < F11 ≤ 30 m	30 m < F11 ≤ 40 m	40 m < F11