Optimization of Measuring Points Layout around a Tunnel in the Transversely Isotropic Rock Mass

Table 1

The radial displacements and average relative errors when λ = 0.

Line	Radial displacement of each measuring point										(cm^−1)
	N1 (cm)	N2 (cm)	N3 (cm)	N4 (cm)	N5 (cm)	N6 (cm)	N7 (cm)	N8 (cm)	N9 (cm)	N10 (cm)
L1	−1.05	−1.16	−0.99	−0.84	−0.72	−0.63	−0.56	−0.50	−0.45	−0.41	1.55
L2	−0.74	−0.90	−0.78	−0.66	−0.57	−0.50	−0.44	−0.39	−0.36	−0.33	1.97
L3	0.10	−0.16	−0.18	−0.17	−0.15	−0.14	−0.12	−0.11	−0.10	−0.09	7.96
L4	1.25	0.83	0.63	0.50	0.42	0.36	0.31	0.28	0.25	0.23	2.60
L5	2.40	1.83	1.43	1.17	0.99	0.85	0.75	0.67	0.60	0.55	1.10
L6	3.24	2.56	2.03	1.66	1.40	1.21	1.06	0.95	0.86	0.78	0.78
L7	3.55	2.83	2.24	1.84	1.55	1.34	1.18	1.05	0.95	0.87	0.70