Solving Saturated/Unsaturated Water Flow Problems - Unsaturated Soil Mechanics in Engineering Practice - page 419

0.5

θ s = 0.495

a f = 19.37 kPa
n f = 3.29
m f = 0.828
ψ

0.4

0.3

r = 67.6 kPa

0.2

0.1

0.0

10 6

0 1 10 100 1000 10,000 100,000

Soil suction, kPa
(a)

10 − 6
10 − 7
10 − 8
10 − 9
10 − 10
10 − 11
10 − 12
10 − 13
10 − 14
10 − 15
10 − 16

10 6

0 1 10 100 1000 10,000 100,000

Soil suction, kPa
(b)

0.012

0.010

0.008

0.006

0.004

0.002

0.000

10 6 0.1 1 10 100 1000 10,000 100,000

Soil suction, kPa

(c)

Figure 8.51 Permeability and water storage function for analyzing unsteady-state seepage
through an isotropic earthfill dam. (a) SWCC. (b) Permeability function. (c) Water storage
function.