黄土坡面片蚀过程稳定含沙量及其影响因素

盛贺伟, 孙莉英, 蔡强国

Steady sediment concentration of sheet erosion on loess slope and influencing factors

Hewei SHENG, Liying SUN, Qiangguo CAI

表3 含沙量拟合结果

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