PROGRESS IN GEOGRAPHY ›› 2016, Vol. 35 ›› Issue (8): 1008-1016.doi: 10.18306/dlkxjz.2016.08.010
• Orginal Article • Previous Articles Next Articles
Hewei SHENG1(), Liying SUN2,*(
), Qiangguo CAI2
Online:
2016-08-25
Published:
2016-08-25
Contact:
Liying SUN
E-mail:heweisheng@nwsuaf.edu.cn;sunliying@igsnrr.ac.cn
Supported by:
Hewei SHENG, Liying SUN, Qiangguo CAI. Steady sediment concentration of sheet erosion on loess slope and influencing factors[J].PROGRESS IN GEOGRAPHY, 2016, 35(8): 1008-1016.
Tab.3
Fitting of sediment concentration"
雨强/(mm/h) | 塿土 | ||||||
---|---|---|---|---|---|---|---|
坡度/° | A | B | β | M | R2 | 稳定含沙量/(kg/m3) | |
90 | 10 | 50.49 | 2.63 | 0.50 | 54.79 | 0.983 | 4.30 |
15 | 46.06 | 2.77 | 0.37 | 50.74 | 0.987 | 4.68 | |
20 | 45.27 | 3.43 | 0.38 | 50.47 | 0.994 | 5.19 | |
25 | 50.58 | 5.08 | 0.56 | 56.83 | 0.989 | 6.25 | |
120 | 10 | 50.49 | 1.90 | 0.29 | 60.04 | 0.989 | 9.56 |
15 | 66.12 | 1.51 | 0.47 | 78.03 | 0.984 | 11.91 | |
20 | 95.62 | 1.12 | 0.49 | 109.85 | 0.995 | 14.23 | |
25 | 121.87 | 0.96 | 0.42 | 140.39 | 0.997 | 18.53 | |
雨强/(mm/h) | 黑垆土 | ||||||
坡度/° | A | B | β | M | R2 | 稳定含沙量/(kg/m3) | |
90 | 10 | 92.74 | 0.40 | 0.16 | 97.50 | 0.997 | 4.76 |
15 | 134.30 | 0.88 | 0.26 | 144.56 | 0.949 | 10.26 | |
20 | 143.90 | 2.35 | 0.60 | 156.30 | 0.952 | 12.40 | |
25 | 52.07 | 2.38 | 0.26 | 64.49 | 0.877 | 12.42 | |
120 | 10 | 82.17 | 1.55 | 0.37 | 91.89 | 0.991 | 9.72 |
15 | 135.80 | 0.59 | 0.30 | 152.94 | 0.994 | 17.14 | |
20 | 146.02 | 0.63 | 0.29 | 165.10 | 0.993 | 19.08 | |
25 | 255.96 | 0.25 | 0.16 | 274.53 | 0.997 | 18.57 |
Tab.4
Values of steady sediment concentration and hydrodynamic parameters"
稳定含沙量/(kg/m3) | 剪切力/Pa | 水流功率/(N/(m·s)) | 单位水流功率/(m/s) | |||||||
---|---|---|---|---|---|---|---|---|---|---|
塿土 | 黑垆土 | 塿土 | 黑垆土 | 塿土 | 黑垆土 | 塿土 | 黑垆土 | |||
4.30 | 4.76 | 0.37 | 0.37 | 0.03 | 0.03 | 0.01 | 0.02 | |||
4.68 | 10.26 | 0.55 | 0.48 | 0.04 | 0.04 | 0.02 | 0.02 | |||
5.19 | 12.40 | 0.66 | 0.67 | 0.05 | 0.05 | 0.03 | 0.03 | |||
6.25 | 12.42 | 0.79 | 0.69 | 0.06 | 0.06 | 0.03 | 0.04 | |||
9.56 | 9.72 | 0.35 | 0.36 | 0.03 | 0.03 | 0.01 | 0.02 | |||
11.91 | 17.14 | 0.45 | 0.38 | 0.04 | 0.04 | 0.02 | 0.03 | |||
14.23 | 19.08 | 0.50 | 0.58 | 0.05 | 0.05 | 0.03 | 0.03 | |||
18.53 | 18.57 | 0.69 | 0.61 | 0.06 | 0.07 | 0.04 | 0.05 |
Tab.5
Initial feature values of steady sediment concentration and hydrodynamic parameters"
C0(K) | C1(K) | C2(K) | C3(K) | |||||||
---|---|---|---|---|---|---|---|---|---|---|
塿土 | 黑垆土 | 塿土 | 黑垆土 | 塿土 | 黑垆土 | 塿土 | 黑垆土 | |||
1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | |||
1.09 | 2.16 | 1.48 | 1.32 | 1.28 | 1.26 | 1.30 | 1.43 | |||
1.21 | 2.61 | 1.77 | 1.82 | 1.68 | 1.59 | 1.87 | 1.72 | |||
1.45 | 2.61 | 2.13 | 1.88 | 2.20 | 1.80 | 2.51 | 2.33 | |||
2.22 | 2.04 | 0.94 | 0.98 | 0.92 | 0.92 | 0.98 | 0.95 | |||
2.77 | 3.60 | 1.20 | 1.04 | 1.34 | 1.22 | 1.66 | 1.76 | |||
3.31 | 4.01 | 1.34 | 1.57 | 1.67 | 1.52 | 2.46 | 1.90 | |||
4.31 | 3.90 | 1.86 | 1.67 | 1.99 | 1.96 | 2.60 | 2.86 |
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