Inverse Analysis and Modeling for Tunneling Thrust on Shield Machine

Table 2

Statistical testing results of the regression computation.

(a) Linear correlation coefficient

Compositional independent variable	𝑃𝐷^2	𝑊𝐷^2	𝑊𝛿^2
Correlation coefficient	0.996	0.992	0.967
Prob.	0.000	0.000	0.000

(b) 𝐹-test

Model 𝐹-test	𝑅^2	𝐹	Prob.
	0.994	17310.787	0.000

(c) 𝑡-test

Model 𝑡-test	Regression coefficient	𝑡	Prob.
𝛽1	18383.878	9.800	0.000
𝛽2	1.179	7.877	0.000
𝛽3	0.792	13.268	0.000