Research Article
Accuracy Evaluation of Advanced Geological Prediction Based on Improved AHP and GPR
Table 3
Grading and value of evaluation factors.
| | Factor | Actual value | Standard value | Relative value | More accurate | Accurate | Relatively accurate | Inaccurate |
| | Frequency selection | 100 MHz | 100 MHz | 1 | 85–115
0.85 ≤ F1 | 75–85
115–125
0.7 ≤ F1 < 0.85 | 65–75
125–135
0.65 ≤ F1 < 0.75 | <65
>135
0.4 ≤ F1 < 0.65 | | Time window selection | 500 ns | 500 ns | 1 | 450–500
0.9 ≤ F2 | 400–450
550–600
0.8 ≤ F2 < 0.9 | 350–400
600–650
0.7 ≤ F2 < 0.8 | <350
>650
0.6 ≤ F2 < 0.7 | | Antenna spacing selection | 1.5 m | 1.8 m | 0.6 | 1.8–2.1
2.1–2.2
0.95 ≤ F3 | 1.4–1.8
2.2–2.6
0.85 ≤ F3 < 0.95 | 1.0–1.4
2.6–3.0
0.75 ≤ F3 < 0.85 | <1.0
>3.0
0.65 ≤ F3 < 0.75 | | Measuring point distance | 0.08 m | 0.1 m | 0.8 | 0.095–0.105
0.9 ≤ F4 | 0.085–0.095 0.105–0.115
0.7 ≤ F4 < 0.9 | 0.075–0.085
0.115–0.125
0.5 ≤ F4 < 0.7 | <0.075
>0.125
0.4 ≤ F4 < 0.5 | | Line layout | 50% | 60% | 0.68 | >51%
0.85 ≤ F5 | 45%–51%
0.75 ≤ F5 < 0.85 | 39%–45%
0.65 ≤ F5 < 0.75 | <39%
0.55 ≤ F5 < 0.65 | | Site interference | 87% | 100% | 0.9 | 95%
0.95 ≤ F6 | 90%–95%
0.9 ≤ F6 < 0.95 | 85%–90%
0.85 ≤ F6 < 0.90 | <85%
0.75 ≤ F6 < 0.85 | | Tunnel face information | 0.8 | 1 | 08 | 0.95–1
10.95 ≤ F7 | 0.85–0.95
0.85 ≤ F7 < 0.95 | 0.75–0.85
0.75 ≤ F7 < 0.85 | <0.75
0.65 ≤ F7 < 0.75 | | Overall tunnel information | 0.6 | 1 | 0.5 | 0.75–1
0.75 ≤ F8 | 0.5–0.75
0.5 ≤ F8 < 0.75 | 0.25–0.5
0.25 ≤ F8 < 0.55 | 0–0.25
0 ≤ F8 < 0.25 | | Software processing | 0.8 | 1 | 0.9 | 0.9–1
0.9 ≤ F9 | 0.8–0.9
0.8 ≤ F9 < 0.9 | 0.7–0.8
0.7 ≤ F9 < 0.8 | <0.7
0.6 ≤ F9 < 0.7 | | Interpretation of image data | 0.8 | 1 | 0.8 | 0.8–1
0.8 ≤ F10 | 0.6–0.8
0.6 ≤ F10 < 0.8 | 0.4–0.6
0.4 ≤ F10 < 0.6 | <0.4
0.2 ≤ F10 < 0.4 | | Prediction of distance | 30 m | — | — | 0–15 m | 15–30 m | 30–40 m | >40 m |
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