22
2 Similarity of Model Experiments
Table 2.4
Comparison of the soil loss between Model Db and Model B after the check dam system was constructed (R
DB
= 1.16)
Run designation
1
2
3
4
5
6
7
8
9
10
Constructed dams
Dam 1
Dam 2
Dam 3, 4, 5, 6 Dam 7 Dam 8, 9, 10, 11,
12
Model B
Observed soil
loss, S
B (kg)
40.10
138.10
73.00
44.70
48.90
47.10
36.70
47.20
61.30
40.60
Soil loss
converted in the
prototype scale,
S
pB (10 6
kg)
1.42
4.87
2.58
1.58
1.73
1.66
1.30
1.67
2.16
1.43
Model Db Observed soil
loss, S
D (kg)
0.37
0.47
0.68
0.76
1.10
0.83
1.12
1.22
1.12
1.28
Soil loss free of
rainfall
difference, S *
D
(kg)
0.45
0.47
0.69
0.80
1.16
1.10
1.02
1.14
0.87
1.12
Soil loss
converted in the
prototype scale,
S
pD (10 6
kg)
0.88
0.92
1.35
1.56
2.26
2.15
1.99
2.22
1.69
2.18
Observed rainfall
intensity, I
D
(mm/min)
2.21
2.46
2.44
2.39
2.39
2.13
2.57
2.54
2.79
2.63
Soil loss error, e
(%)
−37.50
−81.20
−47.60
−0.90
31.20
29.40
53.60
33.10
−21.70
51.90
*Mis-operation