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

Table 1

Volume spans and network outputs of overbreak blocks.

Volume span/m^3	>0.5	0.5∼0.1	0.1∼0.05	<0.05
Network output	(1,0,0,0)	(0,1,0,0)	(0,0,1,0)	(0,0,0,1)