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

Table 10

Predicted deformation of monitoring point 01 by the GDPM-DC.

Monitoring content	GDPM-DC	Stage
		1	2	3	4	5	6	7	8	9
Vertical deformation/mm	Measured value/mm	7.4	11.2	11.9	13.2	14	14.6	15	15.6	16.5
	Predicted value/mm	7.400	11.344	12.118	13.063	13.745	14.366	15.016	15.696	16.603
	Relative error/%	0.00	−1.28	−1.83	1.04	1.82	1.60	−0.11	−0.62	−0.63
Transverse deformation/mm	Measured value/mm	4.3	9.9	11.8	13.3	15.5	16.8	17.9	19.8	21.6
	Predicted value/mm	4.300	10.255	11.912	13.381	14.970	16.442	18.060	19.839	21.699
	Relative error/%	0.00	−3.58	−0.95	−0.61	3.42	2.13	−0.89	−0.20	−0.46
Seepage pressure/kPa	Measured value/mm	53.5	78.99	94.8	89.7	82.05	77.97	75.42	70.33	64.17
	Predicted value/mm	53.500	84.206	92.068	87.874	82.745	78.716	74.892	71.263	66.382
	Relative error/%	0.00	−6.60	2.88	2.04	−0.85	−0.96	0.70	−1.33	−3.45