Inversion Study of Mechanical Parameters of Tunnel Surrounding Rock Based on Similar Test

Table 3

Interpolation displacements of some speckle nodes.

Node number	x (mm)	y (mm)	U x (mm)	U y (mm)
104	345	315	0.111	1.423
105	375	315	0.150	1.438
106	405	315	0.146	1.417
107	435	315	0.102	1.355
108	465	315	0.120	1.320
109	495	315	0.160	1.290
110	525	315	0.202	1.295
111	555	315	0.197	1.249
112	585	315	−0.015	1.384
113	615	315	−0.028	1.380
114	645	315	−0.0129	1.348