Study on Construction Influence of Shield Tunnel of Urban Rail Transit on Large-Section Mining Tunnel

Table 6

Variation of earth pressure at different measuring points (unit: kPa).

Tunnelling distance	Vault	Right wall foot	Right wall	Right wall waist	Invert	Left wall waist	Left wall	Left wall foot	Upper side of shield	Left side of shield	Under side of shield	Right side of shield
20 cm	0.10	0.04	0.00	0.13	0.13	−0.44	3.59	0.15	8.05	3.19	5.58	5.73
25 cm	0.02	0.15	0.00	0.54	−0.10	−0.09	4.53	0.27	8.41	3.30	6.07	6.38
30 cm	0.25	0.36	0.06	0.40	−0.06	0.49	7.57	1.24	10.03	6.89	6.90	8.37
35 cm	0.19	0.34	0.00	0.21	−0.95	0.30	6.96	0.78	10.08	8.33	6.00	8.67
40 cm	0.21	0.36	0.04	−0.18	−0.87	−0.42	6.66	1.21	10.13	7.94	5.88	8.18