20
2 Similarity of Model Experiments
Table 2.3
Comparison of the soil loss between the Model Da and Model B after the check dam system was constructed (R
DB
= 2.50)
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)
5.04
6.72
4.48
1.51
1.40
2.11
1.65
2.73
1.64
1.55
Soil loss free of
rainfall difference,
S *
D (kg)
*
6.06
3.90
1.48
1.51
2.28
1.79
2.77
1.73
1.50
Soil loss
converted in the
prototype scale,
S
pD (10 6
kg)
*
5.46
3.52
1.33
1.36
2.06
1.61
2.50
1.56
1.35
Observed rainfall
intensity, I
D
(mm/min)
2.70
1.71
1.74
1.64
1.56
1.56
1.56
1.61
1.58
1.65
Soil loss error, e
(%)
*
12.00
36.50
−15.50
−20.90
23.70
24.20
50.10
−28.00
−5.60
*Mis-operation