Table 5.

Partial predicted and actual values of the channel wall.

Actual value of morphology	Elman neural network prediction	BP neural network prediction	RBF neural network prediction
1.3	1.3815	1.2663	1.9601
6.5	6.5729	6.5456	6.5057
12.1	12.2081	12.1759	12.0967
16.5	16.5692	16.5013	16.4623
21.7	21.7195	21.6783	21.6758
29.7	29.7173	29.7932	29.7924
31.3	31.2955	31.2774	31.3076
33.3	33.3583	33.3596	33.3650
36.9	36.9524	36.9093	37.3228