Application of Grey Deformation Prediction Model Optimized by Double Coefficient for Tailings Dam

Table 13

Predicted transverse deformation of the dam using different models.

Stage	Measured value/mm	Reference [22] model		GM-WC		GDPM-DC
		Predicted value/mm	Relative error/%	Predicted value/mm	Relative error/%	Predicted value/mm	Relative error/%
1	6.36	6.55	−2.93	6.36	0.00	6.36	0.00
2	6.94	6.82	1.70	7.11	−2.45	7.02	−1.28
3	7.31	7.11	2.81	7.36	−0.70	7.37	−1.83
4	7.80	7.40	5.15	7.62	2.29	7.73	1.04
5	8.03	7.71	3.98	7.89	1.73	7.96	1.82
6	8.17	8.03	1.76	8.17	0.00	8.19	1.60
7	8.46	8.36	1.17	8.46	0.02	8.43	−0.11
8	8.64	8.71	−0.82	8.76	−1.36	8.68	−0.62
9	8.70	9.07	−4.22	9.07	−4.22	8.80	−1.15
10	8.91	9.44	−5.99	9.39	−5.36	9.10	−2.13
Mean relative error/%		—	5.11	—	4.79	—	1.64