Modification of Peck Formula to Predict Ground Surface Settlement of Twin Tunnels in Low Permeability Soil

Table 4

Parameters of the simulation in Nanjing Metro and Singapore MRT.

Project	(cm/s)	(mm)	(mm)	(mm)	(mm)	(m)	(m)	(m)	(m)
Nanjing Metro	6 × 10^−4	−13.88	−13.44	−16.85	−17.54	6.73	6.35	10.12	47.22
Singapore MRT	7 × 10^−7	−39.44	−28.89	−58.08	−56.50	14.70	30.14	19.77	66.95