Effect of Filling Interval Time on Long-Term Mechanical Strength of Layered Cemented Tailing Backfill

Table 3

Multiple correlation coefficient result of different fitting methods.

Concentration	Fitting way
	Linear	Exponential	Logistic	Polynomial
70	0.9042	0.8963	0.8504	0.9154
72	0.8961	0.8923	0.7575	0.9930
75	0.8943	0.8903	0.7544	0.9935
Average	0.8982	0.8930	0.7874	0.9673