Table 1 Model physical parameters.

From: Research on the deformation laws of buildings adjacent to shield tunnels in clay strata

Stratigraphic lithology (geology)

Thickness/m

Natural density/(kg m−3)

Cohesion/MPa

Angle of internal friction/o

Poisson's ratio

Modulus of elasticity/MPa

Stockpile soil

3.5

1800

0.018

16

0.3

13

Silt sand

2

1920

0.003

18

0.25

31

Silty clay

14.5

2100

0.021

20

0.3

26

Clayey silt

15

2100

0.031

27

0.3

26

Shield

0.15

7800

  

0.1

40,000

Tube sheet

0.3

2450

  

0.17

34,500

Isogenic layer

0.15

1850

  

0.2

100

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