Experimental and Numerical Studies on Rock Cutting with Saw Blade and Conical Pick Combined Cutting Method

Table 3

The relationship analysis of peak cutting force.

Variable	Relational expression	Correlation coefficient	F value
F-UCS	y = 1.19908 + 0.08203exp(0.20133x)	0.9998	87083	0.002
F-width	y = 2.11642 + 10.73982exp(−0.01601x)	0.9905	16194	0.005
F-height	y = 2.07634 + 3.31589exp(−0.02165x)	0.8643	1116	0.02
F-thickness	y = −0.20993 + 0.52042exp(0.07704x)	0.9915	751	0.02
F-depth	y = 0.65524 + 0.71216exp(0.03824x)	0.9953	1458	0.02
F-confining	y = 2.22446 + 1.12752x − 0.30793x^2	0.9981	1043	0.001