Table 2 Physical and mechanical parameters used for numerical model.

From: Instability mechanism of loess-mudstone landslides under rainfall infiltration conditions

Soil layer

Natural unit weight (kN/m3)

Effective cohesion (kPa)

Effective internal friction angle (°)

Elastic modulus (MPa)

Poisson’s ratio

Loess

16.82

7.51

23.43

25.23

0.35

Silt

17.46

6.53

25.61

42.15

0.28

Gravel

20.73

3.24

35.82

153.75

0.25

Glaciofluvial gravel

21.65

5.15

33.26

147.69

0.25

Mudstone

22.51

114.33

27.21

671.18

0.27