Solving Saturated/Unsaturated Water Flow Problems - Unsaturated Soil Mechanics in Engineering Practice - page 430

0.5

0.4

θ s = 0.495
a f = 5.19 kPa
n f = 20
m f = 0.306
ψ r = 9.42 kPa

0.3

0.2

0.1

0.0

1000

10 6 0 1 10 100 10,000 100,000

Soil suction, kPa

(a)

10 − 2
10 − 3
10 − 4
10 − 5
10 − 6
10 − 7
10 − 8
10 − 9
10 − 10
10 − 11
10 − 12
10 − 13
10 − 14
10 − 15
10 − 16

Soil 1

Soil 2

0 1 10 100 1000 10,000 100,000

10 6

Soil suction, kPa

(b)

0.14

0.12

0.10

0.08

0.06

0.04

0.02

0.00

10 6

0 1 10 100 1000 10,000 100,000

Soil suction, kPa
(c)

Figure 8.63 Permeability and water storage functions for analyzing unsteady-state seepage
below a lagoon. (a) SWCC. (b) Permeability functions. (b) Water storage function.