Research on the Reuse of Discharged Soil from EBP Shield Tunnels in Synchronous Grouting Material

Table 8

Physical mechanics parameters for each stratum of the calculated section.

Stratum name	Permeability coefficient (cm·s^-1)	Natural unit wet (kN·m^−3)	Void ratio	Modulus of compression (MPa)	Force of cohesion (kPa)	Angle of friction (^。)	Poisson’s ratio	Buried depth (m)
Miscellaneous fill	—	18.5	—	5.4	10	15	0.33	0–2.5
Silty sand	—	20.5	—	18	0.1	30	0.25	2.5–7
Clayey silt	0.1	19.6	0.68	6	22.4	19.2	0.30	7–18
Fine sand	10	20.3	0.535	25	0.1	32	0.24	18–22
Silty clay	0.05	20.1	0.639	6.5	32	21	0.32	22–32
Calcareous cemented sandy soil	1.5	21.2	0.4	45	25	36	0.22	32–66