Monitoring and Analysis of Ground Settlement Induced by Tunnelling with Slurry Pressure-Balanced Tunnel Boring Machine

Table 3

Estimated volume loss parameters from down-track tunnelling.

Parameter	Average	Settlement arrays
		1	2	3	4	5	6	7	8	9	10	11	12	13	14
(mm)	−8.1	−7.3	−6.8	−9.1	−10	−12	−8.9	−6.7	−4.9	−6.3	−11	−9.1	−8	−5.5	−7.4
(%)	0.44	0.32	0.3	0.44	0.46	0.49	0.47	0.35	0.24	0.42	0.43	0.59	0.63	0.47	0.58
	0.52	0.48	0.49	0.5	0.44	0.41	0.5	0.49	0.46	0.67	0.35	0.54	0.63	0.66	0.61