Predictions of Overbreak Blocks in Tunnels Based on the Wavelet Neural Network Method and the Geological Statistics Theory

Table 6

Results of neural network prediction in the Hongfeng tunnel.

Samples	Orientation			Trace length	Spacing	Actual output
	Joint 1	Joint 2	Bedding
1	155.90/82.61	57.48/81.87	60.69/12.10	55.77	41.03	0.0032	0.0326	0.0792	0.9843
2	168.53/82.09	60.36/82.47	65.90/8.69	66.10	50.74	0.0032	0.0322	0.0899	0.9844
3	157.57/81.38	58.77/83.04	65.55/14.21	60.62	43.37	0.0032	0.0322	0.0894	0.9844
4	175.21/82.12	61.59/83.45	64.11/12.50	69.08	49.54	0.0032	0.0322	0.0899	0.9844
5	179.22/81.39	56.82/82.59	60.56/9.44	55.34	45.32	0.0032	0.0322	0.0899	0.9844